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Finding the Fourth Proportional to 286,773.60, 430,160.40 and 275,887.20

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Solution

The fourth proportional to 286,773.60, 430,160.40 and 275,887.20 is: 413,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,773.60 : 430,160.40 = 275,887.20 : x
  2. Step 2: Convert to fraction form
    286,773.60/430,160.40 = 275,887.20/x
  3. Step 3: Cross multiply
    286,773.60x = 430,160.40 × 275,887.20
  4. Step 4: Simplify right side
    286,773.60x = 118,675,748,306.88
  5. Step 5: Solve for x
    x = 118,675,748,306.88/286,773.60
  6. Step 6: Final answer
    x = 413,830.80

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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.