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Finding the Fourth Proportional to 457,575.66, 631,240.83 and 287,903.34

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Solution

The fourth proportional to 457,575.66, 631,240.83 and 287,903.34 is: 397,172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,575.66 : 631,240.83 = 287,903.34 : x
  2. Step 2: Convert to fraction form
    457,575.66/631,240.83 = 287,903.34/x
  3. Step 3: Cross multiply
    457,575.66x = 631,240.83 × 287,903.34
  4. Step 4: Simplify right side
    457,575.66x = 181,736,343,301.37
  5. Step 5: Solve for x
    x = 181,736,343,301.37/457,575.66
  6. Step 6: Final answer
    x = 397,172.23

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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.