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Finding the Fourth Proportional to 243,728.84, 365,595.18 and 85,921.16

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Solution

The fourth proportional to 243,728.84, 365,595.18 and 85,921.16 is: 128,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,728.84 : 365,595.18 = 85,921.16 : x
  2. Step 2: Convert to fraction form
    243,728.84/365,595.18 = 85,921.16/x
  3. Step 3: Cross multiply
    243,728.84x = 365,595.18 × 85,921.16
  4. Step 4: Simplify right side
    243,728.84x = 31,412,361,956.01
  5. Step 5: Solve for x
    x = 31,412,361,956.01/243,728.84
  6. Step 6: Final answer
    x = 128,882.42

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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.