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Finding the Fourth Proportional to 243,203.52, 364,841.73 and 85,404.18

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Solution

The fourth proportional to 243,203.52, 364,841.73 and 85,404.18 is: 128,119.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,203.52 : 364,841.73 = 85,404.18 : x
  2. Step 2: Convert to fraction form
    243,203.52/364,841.73 = 85,404.18/x
  3. Step 3: Cross multiply
    243,203.52x = 364,841.73 × 85,404.18
  4. Step 4: Simplify right side
    243,203.52x = 31,159,008,780.43
  5. Step 5: Solve for x
    x = 31,159,008,780.43/243,203.52
  6. Step 6: Final answer
    x = 128,119.07

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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.