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Finding the Fourth Proportional to 560,617.20, 840,925.80 and 205,513.20

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Solution

The fourth proportional to 560,617.20, 840,925.80 and 205,513.20 is: 308,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,617.20 : 840,925.80 = 205,513.20 : x
  2. Step 2: Convert to fraction form
    560,617.20/840,925.80 = 205,513.20/x
  3. Step 3: Cross multiply
    560,617.20x = 840,925.80 × 205,513.20
  4. Step 4: Simplify right side
    560,617.20x = 172,821,352,120.56
  5. Step 5: Solve for x
    x = 172,821,352,120.56/560,617.20
  6. Step 6: Final answer
    x = 308,269.80

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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.