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Finding the Fourth Proportional to 455,840.80, 683,761.20 and 156,281.20

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Solution

The fourth proportional to 455,840.80, 683,761.20 and 156,281.20 is: 234,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,840.80 : 683,761.20 = 156,281.20 : x
  2. Step 2: Convert to fraction form
    455,840.80/683,761.20 = 156,281.20/x
  3. Step 3: Cross multiply
    455,840.80x = 683,761.20 × 156,281.20
  4. Step 4: Simplify right side
    455,840.80x = 106,859,020,849.44
  5. Step 5: Solve for x
    x = 106,859,020,849.44/455,840.80
  6. Step 6: Final answer
    x = 234,421.80

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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.