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Finding the Fourth Proportional to 608,217.60, 912,520.80 and 209,114.40

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Solution

The fourth proportional to 608,217.60, 912,520.80 and 209,114.40 is: 313,738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,217.60 : 912,520.80 = 209,114.40 : x
  2. Step 2: Convert to fraction form
    608,217.60/912,520.80 = 209,114.40/x
  3. Step 3: Cross multiply
    608,217.60x = 912,520.80 × 209,114.40
  4. Step 4: Simplify right side
    608,217.60x = 190,821,239,579.52
  5. Step 5: Solve for x
    x = 190,821,239,579.52/608,217.60
  6. Step 6: Final answer
    x = 313,738.44

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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.