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Finding the Fourth Proportional to 243,191.52, 364,823.82 and 85,392.18

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Solution

The fourth proportional to 243,191.52, 364,823.82 and 85,392.18 is: 128,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,191.52 : 364,823.82 = 85,392.18 : x
  2. Step 2: Convert to fraction form
    243,191.52/364,823.82 = 85,392.18/x
  3. Step 3: Cross multiply
    243,191.52x = 364,823.82 × 85,392.18
  4. Step 4: Simplify right side
    243,191.52x = 31,153,101,305.73
  5. Step 5: Solve for x
    x = 31,153,101,305.73/243,191.52
  6. Step 6: Final answer
    x = 128,101.10

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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.