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Finding the Fourth Proportional to 243,542.06, 365,342.61 and 85,738.22

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Solution

The fourth proportional to 243,542.06, 365,342.61 and 85,738.22 is: 128,617.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,542.06 : 365,342.61 = 85,738.22 : x
  2. Step 2: Convert to fraction form
    243,542.06/365,342.61 = 85,738.22/x
  3. Step 3: Cross multiply
    243,542.06x = 365,342.61 × 85,738.22
  4. Step 4: Simplify right side
    243,542.06x = 31,323,825,071.55
  5. Step 5: Solve for x
    x = 31,323,825,071.55/243,542.06
  6. Step 6: Final answer
    x = 128,617.72

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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.