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Finding the Fourth Proportional to 608,428.90, 912,338.67 and 187,650.10

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Solution

The fourth proportional to 608,428.90, 912,338.67 and 187,650.10 is: 281,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,428.90 : 912,338.67 = 187,650.10 : x
  2. Step 2: Convert to fraction form
    608,428.90/912,338.67 = 187,650.10/x
  3. Step 3: Cross multiply
    608,428.90x = 912,338.67 × 187,650.10
  4. Step 4: Simplify right side
    608,428.90x = 171,200,442,659.37
  5. Step 5: Solve for x
    x = 171,200,442,659.37/608,428.90
  6. Step 6: Final answer
    x = 281,381.18

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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.