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Finding the Fourth Proportional to 437,885.60, 656,828.40 and 157,431.20

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Solution

The fourth proportional to 437,885.60, 656,828.40 and 157,431.20 is: 236,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,885.60 : 656,828.40 = 157,431.20 : x
  2. Step 2: Convert to fraction form
    437,885.60/656,828.40 = 157,431.20/x
  3. Step 3: Cross multiply
    437,885.60x = 656,828.40 × 157,431.20
  4. Step 4: Simplify right side
    437,885.60x = 103,405,283,206.08
  5. Step 5: Solve for x
    x = 103,405,283,206.08/437,885.60
  6. Step 6: Final answer
    x = 236,146.80

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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.