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Finding the Fourth Proportional to 608,218.30, 912,339.60 and 158,911.30

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Solution

The fourth proportional to 608,218.30, 912,339.60 and 158,911.30 is: 238,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,218.30 : 912,339.60 = 158,911.30 : x
  2. Step 2: Convert to fraction form
    608,218.30/912,339.60 = 158,911.30/x
  3. Step 3: Cross multiply
    608,218.30x = 912,339.60 × 158,911.30
  4. Step 4: Simplify right side
    608,218.30x = 144,981,071,877.48
  5. Step 5: Solve for x
    x = 144,981,071,877.48/608,218.30
  6. Step 6: Final answer
    x = 238,370.12

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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.