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Finding the Fourth Proportional to 608,155.60, 912,427.80 and 209,052.40

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Solution

The fourth proportional to 608,155.60, 912,427.80 and 209,052.40 is: 313,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,155.60 : 912,427.80 = 209,052.40 : x
  2. Step 2: Convert to fraction form
    608,155.60/912,427.80 = 209,052.40/x
  3. Step 3: Cross multiply
    608,155.60x = 912,427.80 × 209,052.40
  4. Step 4: Simplify right side
    608,155.60x = 190,745,221,416.72
  5. Step 5: Solve for x
    x = 190,745,221,416.72/608,155.60
  6. Step 6: Final answer
    x = 313,645.42

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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.