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Finding the Fourth Proportional to 429,372.35, 644,058.53 and 249,272.90

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Solution

The fourth proportional to 429,372.35, 644,058.53 and 249,272.90 is: 373,909.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,372.35 : 644,058.53 = 249,272.90 : x
  2. Step 2: Convert to fraction form
    429,372.35/644,058.53 = 249,272.90/x
  3. Step 3: Cross multiply
    429,372.35x = 644,058.53 × 249,272.90
  4. Step 4: Simplify right side
    429,372.35x = 160,546,336,296.47
  5. Step 5: Solve for x
    x = 160,546,336,296.47/429,372.35
  6. Step 6: Final answer
    x = 373,909.35

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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.