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Finding the Fourth Proportional to 608,218.60, 912,522.30 and 209,115.40

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Solution

The fourth proportional to 608,218.60, 912,522.30 and 209,115.40 is: 313,739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,218.60 : 912,522.30 = 209,115.40 : x
  2. Step 2: Convert to fraction form
    608,218.60/912,522.30 = 209,115.40/x
  3. Step 3: Cross multiply
    608,218.60x = 912,522.30 × 209,115.40
  4. Step 4: Simplify right side
    608,218.60x = 190,822,465,773.42
  5. Step 5: Solve for x
    x = 190,822,465,773.42/608,218.60
  6. Step 6: Final answer
    x = 313,739.94

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1.5x scale

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.