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Finding the Fourth Proportional to 437,566.80, 655,366.05 and 260,419.80

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Solution

The fourth proportional to 437,566.80, 655,366.05 and 260,419.80 is: 390,043.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,566.80 : 655,366.05 = 260,419.80 : x
  2. Step 2: Convert to fraction form
    437,566.80/655,366.05 = 260,419.80/x
  3. Step 3: Cross multiply
    437,566.80x = 655,366.05 × 260,419.80
  4. Step 4: Simplify right side
    437,566.80x = 170,670,295,667.79
  5. Step 5: Solve for x
    x = 170,670,295,667.79/437,566.80
  6. Step 6: Final answer
    x = 390,043.98

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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.