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Finding the Fourth Proportional to 457,237.36, 630,979.30 and 253,287.65

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Solution

The fourth proportional to 457,237.36, 630,979.30 and 253,287.65 is: 349,532.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,237.36 : 630,979.30 = 253,287.65 : x
  2. Step 2: Convert to fraction form
    457,237.36/630,979.30 = 253,287.65/x
  3. Step 3: Cross multiply
    457,237.36x = 630,979.30 × 253,287.65
  4. Step 4: Simplify right side
    457,237.36x = 159,819,265,989.70
  5. Step 5: Solve for x
    x = 159,819,265,989.70/457,237.36
  6. Step 6: Final answer
    x = 349,532.38

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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.