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Finding the Fourth Proportional to 500,312.31, 690,436.56 and 270,874.60

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Solution

The fourth proportional to 500,312.31, 690,436.56 and 270,874.60 is: 373,809.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,312.31 : 690,436.56 = 270,874.60 : x
  2. Step 2: Convert to fraction form
    500,312.31/690,436.56 = 270,874.60/x
  3. Step 3: Cross multiply
    500,312.31x = 690,436.56 × 270,874.60
  4. Step 4: Simplify right side
    500,312.31x = 187,021,726,305.06
  5. Step 5: Solve for x
    x = 187,021,726,305.06/500,312.31
  6. Step 6: Final answer
    x = 373,809.96

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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.