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Finding the Fourth Proportional to 285,555.60, 428,340.24 and 96,018.40

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Solution

The fourth proportional to 285,555.60, 428,340.24 and 96,018.40 is: 144,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,555.60 : 428,340.24 = 96,018.40 : x
  2. Step 2: Convert to fraction form
    285,555.60/428,340.24 = 96,018.40/x
  3. Step 3: Cross multiply
    285,555.60x = 428,340.24 × 96,018.40
  4. Step 4: Simplify right side
    285,555.60x = 41,128,544,500.42
  5. Step 5: Solve for x
    x = 41,128,544,500.42/285,555.60
  6. Step 6: Final answer
    x = 144,029.90

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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.