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Finding the Fourth Proportional to 243,666.32, 365,121.84 and 168,931.76

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Solution

The fourth proportional to 243,666.32, 365,121.84 and 168,931.76 is: 253,135.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,666.32 : 365,121.84 = 168,931.76 : x
  2. Step 2: Convert to fraction form
    243,666.32/365,121.84 = 168,931.76/x
  3. Step 3: Cross multiply
    243,666.32x = 365,121.84 × 168,931.76
  4. Step 4: Simplify right side
    243,666.32x = 61,680,675,045.64
  5. Step 5: Solve for x
    x = 61,680,675,045.64/243,666.32
  6. Step 6: Final answer
    x = 253,135.83

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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.