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Finding the Fourth Proportional to 292,488.59, 438,677.39 and 142,578.11

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Solution

The fourth proportional to 292,488.59, 438,677.39 and 142,578.11 is: 213,840.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,488.59 : 438,677.39 = 142,578.11 : x
  2. Step 2: Convert to fraction form
    292,488.59/438,677.39 = 142,578.11/x
  3. Step 3: Cross multiply
    292,488.59x = 438,677.39 × 142,578.11
  4. Step 4: Simplify right side
    292,488.59x = 62,545,791,328.99
  5. Step 5: Solve for x
    x = 62,545,791,328.99/292,488.59
  6. Step 6: Final answer
    x = 213,840.11

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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.