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Finding the Fourth Proportional to 437,564.40, 656,492.20 and 157,103.60

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Solution

The fourth proportional to 437,564.40, 656,492.20 and 157,103.60 is: 235,707.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,564.40 : 656,492.20 = 157,103.60 : x
  2. Step 2: Convert to fraction form
    437,564.40/656,492.20 = 157,103.60/x
  3. Step 3: Cross multiply
    437,564.40x = 656,492.20 × 157,103.60
  4. Step 4: Simplify right side
    437,564.40x = 103,137,287,991.92
  5. Step 5: Solve for x
    x = 103,137,287,991.92/437,564.40
  6. Step 6: Final answer
    x = 235,707.68

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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.