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Finding the Fourth Proportional to 437,957.20, 655,623.60 and 260,372.80

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Solution

The fourth proportional to 437,957.20, 655,623.60 and 260,372.80 is: 389,779.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,957.20 : 655,623.60 = 260,372.80 : x
  2. Step 2: Convert to fraction form
    437,957.20/655,623.60 = 260,372.80/x
  3. Step 3: Cross multiply
    437,957.20x = 655,623.60 × 260,372.80
  4. Step 4: Simplify right side
    437,957.20x = 170,706,552,478.08
  5. Step 5: Solve for x
    x = 170,706,552,478.08/437,957.20
  6. Step 6: Final answer
    x = 389,779.08

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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.