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Finding the Fourth Proportional to 437,455.80, 656,442.90 and 288,124.20

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Solution

The fourth proportional to 437,455.80, 656,442.90 and 288,124.20 is: 432,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,455.80 : 656,442.90 = 288,124.20 : x
  2. Step 2: Convert to fraction form
    437,455.80/656,442.90 = 288,124.20/x
  3. Step 3: Cross multiply
    437,455.80x = 656,442.90 × 288,124.20
  4. Step 4: Simplify right side
    437,455.80x = 189,137,085,408.18
  5. Step 5: Solve for x
    x = 189,137,085,408.18/437,455.80
  6. Step 6: Final answer
    x = 432,357.02

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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.