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Finding the Fourth Proportional to 292,643.91, 438,627.02 and 134,540.55

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Solution

The fourth proportional to 292,643.91, 438,627.02 and 134,540.55 is: 201,655.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,643.91 : 438,627.02 = 134,540.55 : x
  2. Step 2: Convert to fraction form
    292,643.91/438,627.02 = 134,540.55/x
  3. Step 3: Cross multiply
    292,643.91x = 438,627.02 × 134,540.55
  4. Step 4: Simplify right side
    292,643.91x = 59,013,119,842.96
  5. Step 5: Solve for x
    x = 59,013,119,842.96/292,643.91
  6. Step 6: Final answer
    x = 201,655.04

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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.