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Finding the Fourth Proportional to 292,620.30, 438,959.65 and 79,391.55

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Solution

The fourth proportional to 292,620.30, 438,959.65 and 79,391.55 is: 119,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,620.30 : 438,959.65 = 79,391.55 : x
  2. Step 2: Convert to fraction form
    292,620.30/438,959.65 = 79,391.55/x
  3. Step 3: Cross multiply
    292,620.30x = 438,959.65 × 79,391.55
  4. Step 4: Simplify right side
    292,620.30x = 34,849,687,000.96
  5. Step 5: Solve for x
    x = 34,849,687,000.96/292,620.30
  6. Step 6: Final answer
    x = 119,095.25

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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.