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Finding the Fourth Proportional to 393,375,475.62, 589,772,318.65 and 237,894,717.57

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Solution

The fourth proportional to 393,375,475.62, 589,772,318.65 and 237,894,717.57 is: 356,666,157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,375,475.62 : 589,772,318.65 = 237,894,717.57 : x
  2. Step 2: Convert to fraction form
    393,375,475.62/589,772,318.65 = 237,894,717.57/x
  3. Step 3: Cross multiply
    393,375,475.62x = 589,772,318.65 × 237,894,717.57
  4. Step 4: Simplify right side
    393,375,475.62x = 140,303,719,175,845,776
  5. Step 5: Solve for x
    x = 140,303,719,175,845,776/393,375,475.62
  6. Step 6: Final answer
    x = 356,666,157.07

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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.