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Finding the Fourth Proportional to 315,956.20, 473,012.70 and 306,740.20

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Solution

The fourth proportional to 315,956.20, 473,012.70 and 306,740.20 is: 459,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,956.20 : 473,012.70 = 306,740.20 : x
  2. Step 2: Convert to fraction form
    315,956.20/473,012.70 = 306,740.20/x
  3. Step 3: Cross multiply
    315,956.20x = 473,012.70 × 306,740.20
  4. Step 4: Simplify right side
    315,956.20x = 145,092,010,200.54
  5. Step 5: Solve for x
    x = 145,092,010,200.54/315,956.20
  6. Step 6: Final answer
    x = 459,215.58

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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.