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Finding the Fourth Proportional to 317,812.32, 438,472.37 and 181,796.72

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Solution

The fourth proportional to 317,812.32, 438,472.37 and 181,796.72 is: 250,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,812.32 : 438,472.37 = 181,796.72 : x
  2. Step 2: Convert to fraction form
    317,812.32/438,472.37 = 181,796.72/x
  3. Step 3: Cross multiply
    317,812.32x = 438,472.37 × 181,796.72
  4. Step 4: Simplify right side
    317,812.32x = 79,712,836,938.76
  5. Step 5: Solve for x
    x = 79,712,836,938.76/317,812.32
  6. Step 6: Final answer
    x = 250,817.33

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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.