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Finding the Fourth Proportional to 457,818.38, 631,758.54 and 253,861.80

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Solution

The fourth proportional to 457,818.38, 631,758.54 and 253,861.80 is: 350,312.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,818.38 : 631,758.54 = 253,861.80 : x
  2. Step 2: Convert to fraction form
    457,818.38/631,758.54 = 253,861.80/x
  3. Step 3: Cross multiply
    457,818.38x = 631,758.54 × 253,861.80
  4. Step 4: Simplify right side
    457,818.38x = 160,379,357,284.69
  5. Step 5: Solve for x
    x = 160,379,357,284.69/457,818.38
  6. Step 6: Final answer
    x = 350,312.19

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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.