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Finding the Fourth Proportional to 290,331.68, 435,497.31 and 90,669.17

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Solution

The fourth proportional to 290,331.68, 435,497.31 and 90,669.17 is: 136,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,331.68 : 435,497.31 = 90,669.17 : x
  2. Step 2: Convert to fraction form
    290,331.68/435,497.31 = 90,669.17/x
  3. Step 3: Cross multiply
    290,331.68x = 435,497.31 × 90,669.17
  4. Step 4: Simplify right side
    290,331.68x = 39,486,180,723.68
  5. Step 5: Solve for x
    x = 39,486,180,723.68/290,331.68
  6. Step 6: Final answer
    x = 136,003.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.