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Finding the Fourth Proportional to 608,156.87, 839,389.71 and 353,654.87

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Solution

The fourth proportional to 608,156.87, 839,389.71 and 353,654.87 is: 488,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,156.87 : 839,389.71 = 353,654.87 : x
  2. Step 2: Convert to fraction form
    608,156.87/839,389.71 = 353,654.87/x
  3. Step 3: Cross multiply
    608,156.87x = 839,389.71 × 353,654.87
  4. Step 4: Simplify right side
    608,156.87x = 296,854,258,769.39
  5. Step 5: Solve for x
    x = 296,854,258,769.39/608,156.87
  6. Step 6: Final answer
    x = 488,121.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.