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Finding the Fourth Proportional to 608,165.60, 912,442.80 and 209,062.40

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Solution

The fourth proportional to 608,165.60, 912,442.80 and 209,062.40 is: 313,660.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,165.60 : 912,442.80 = 209,062.40 : x
  2. Step 2: Convert to fraction form
    608,165.60/912,442.80 = 209,062.40/x
  3. Step 3: Cross multiply
    608,165.60x = 912,442.80 × 209,062.40
  4. Step 4: Simplify right side
    608,165.60x = 190,757,481,630.72
  5. Step 5: Solve for x
    x = 190,757,481,630.72/608,165.60
  6. Step 6: Final answer
    x = 313,660.43

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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.