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Finding the Fourth Proportional to 292,652.65, 438,979.92 and 79,421.77

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Solution

The fourth proportional to 292,652.65, 438,979.92 and 79,421.77 is: 119,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,652.65 : 438,979.92 = 79,421.77 : x
  2. Step 2: Convert to fraction form
    292,652.65/438,979.92 = 79,421.77/x
  3. Step 3: Cross multiply
    292,652.65x = 438,979.92 × 79,421.77
  4. Step 4: Simplify right side
    292,652.65x = 34,864,562,240.86
  5. Step 5: Solve for x
    x = 34,864,562,240.86/292,652.65
  6. Step 6: Final answer
    x = 119,132.91

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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.