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Finding the Fourth Proportional to 292,148.55, 438,288.48 and 92,480.91

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Solution

The fourth proportional to 292,148.55, 438,288.48 and 92,480.91 is: 138,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,148.55 : 438,288.48 = 92,480.91 : x
  2. Step 2: Convert to fraction form
    292,148.55/438,288.48 = 92,480.91/x
  3. Step 3: Cross multiply
    292,148.55x = 438,288.48 × 92,480.91
  4. Step 4: Simplify right side
    292,148.55x = 40,533,317,472.92
  5. Step 5: Solve for x
    x = 40,533,317,472.92/292,148.55
  6. Step 6: Final answer
    x = 138,742.15

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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.