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Finding the Fourth Proportional to 390,625.28, 584,770.51 and 236,284.19

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Solution

The fourth proportional to 390,625.28, 584,770.51 and 236,284.19 is: 353,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,625.28 : 584,770.51 = 236,284.19 : x
  2. Step 2: Convert to fraction form
    390,625.28/584,770.51 = 236,284.19/x
  3. Step 3: Cross multiply
    390,625.28x = 584,770.51 × 236,284.19
  4. Step 4: Simplify right side
    390,625.28x = 138,172,023,367.38
  5. Step 5: Solve for x
    x = 138,172,023,367.38/390,625.28
  6. Step 6: Final answer
    x = 353,720.13

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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.