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Finding the Fourth Proportional to 292,079.20, 438,045.90 and 112,125.55

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Solution

The fourth proportional to 292,079.20, 438,045.90 and 112,125.55 is: 168,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,079.20 : 438,045.90 = 112,125.55 : x
  2. Step 2: Convert to fraction form
    292,079.20/438,045.90 = 112,125.55/x
  3. Step 3: Cross multiply
    292,079.20x = 438,045.90 × 112,125.55
  4. Step 4: Simplify right side
    292,079.20x = 49,116,137,462.75
  5. Step 5: Solve for x
    x = 49,116,137,462.75/292,079.20
  6. Step 6: Final answer
    x = 168,160.34

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1.5x scale

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.