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Finding the Fourth Proportional to 292,488.75, 438,677.64 and 142,578.27

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Solution

The fourth proportional to 292,488.75, 438,677.64 and 142,578.27 is: 213,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,488.75 : 438,677.64 = 142,578.27 : x
  2. Step 2: Convert to fraction form
    292,488.75/438,677.64 = 142,578.27/x
  3. Step 3: Cross multiply
    292,488.75x = 438,677.64 × 142,578.27
  4. Step 4: Simplify right side
    292,488.75x = 62,545,898,998.88
  5. Step 5: Solve for x
    x = 62,545,898,998.88/292,488.75
  6. Step 6: Final answer
    x = 213,840.36

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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.