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Finding the Fourth Proportional to 315,660.65, 473,302.04 and 147,219.12

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Solution

The fourth proportional to 315,660.65, 473,302.04 and 147,219.12 is: 220,740.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,660.65 : 473,302.04 = 147,219.12 : x
  2. Step 2: Convert to fraction form
    315,660.65/473,302.04 = 147,219.12/x
  3. Step 3: Cross multiply
    315,660.65x = 473,302.04 × 147,219.12
  4. Step 4: Simplify right side
    315,660.65x = 69,679,109,086.91
  5. Step 5: Solve for x
    x = 69,679,109,086.91/315,660.65
  6. Step 6: Final answer
    x = 220,740.56

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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.