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Finding the Fourth Proportional to 457,745.46, 631,688.92 and 253,798.80

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Solution

The fourth proportional to 457,745.46, 631,688.92 and 253,798.80 is: 350,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,745.46 : 631,688.92 = 253,798.80 : x
  2. Step 2: Convert to fraction form
    457,745.46/631,688.92 = 253,798.80/x
  3. Step 3: Cross multiply
    457,745.46x = 631,688.92 × 253,798.80
  4. Step 4: Simplify right side
    457,745.46x = 160,321,889,869.30
  5. Step 5: Solve for x
    x = 160,321,889,869.30/457,745.46
  6. Step 6: Final answer
    x = 350,242.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.