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Finding the Fourth Proportional to 316,837.50, 437,128.11 and 180,773.70

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Solution

The fourth proportional to 316,837.50, 437,128.11 and 180,773.70 is: 249,406.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,837.50 : 437,128.11 = 180,773.70 : x
  2. Step 2: Convert to fraction form
    316,837.50/437,128.11 = 180,773.70/x
  3. Step 3: Cross multiply
    316,837.50x = 437,128.11 × 180,773.70
  4. Step 4: Simplify right side
    316,837.50x = 79,021,265,818.71
  5. Step 5: Solve for x
    x = 79,021,265,818.71/316,837.50
  6. Step 6: Final answer
    x = 249,406.29

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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.