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Finding the Fourth Proportional to 437,570.20, 656,355.30 and 259,985.80

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Solution

The fourth proportional to 437,570.20, 656,355.30 and 259,985.80 is: 389,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,570.20 : 656,355.30 = 259,985.80 : x
  2. Step 2: Convert to fraction form
    437,570.20/656,355.30 = 259,985.80/x
  3. Step 3: Cross multiply
    437,570.20x = 656,355.30 × 259,985.80
  4. Step 4: Simplify right side
    437,570.20x = 170,643,057,754.74
  5. Step 5: Solve for x
    x = 170,643,057,754.74/437,570.20
  6. Step 6: Final answer
    x = 389,978.70

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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.