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Finding the Fourth Proportional to 389,799.84, 584,730 and 123,575.52

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Solution

The fourth proportional to 389,799.84, 584,730 and 123,575.52 is: 185,372.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,799.84 : 584,730 = 123,575.52 : x
  2. Step 2: Convert to fraction form
    389,799.84/584,730 = 123,575.52/x
  3. Step 3: Cross multiply
    389,799.84x = 584,730 × 123,575.52
  4. Step 4: Simplify right side
    389,799.84x = 72,258,313,809.60
  5. Step 5: Solve for x
    x = 72,258,313,809.60/389,799.84
  6. Step 6: Final answer
    x = 185,372.87

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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.