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Finding the Fourth Proportional to 287,876.58, 432,189.05 and 221,363.42

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Solution

The fourth proportional to 287,876.58, 432,189.05 and 221,363.42 is: 332,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,876.58 : 432,189.05 = 221,363.42 : x
  2. Step 2: Convert to fraction form
    287,876.58/432,189.05 = 221,363.42/x
  3. Step 3: Cross multiply
    287,876.58x = 432,189.05 × 221,363.42
  4. Step 4: Simplify right side
    287,876.58x = 95,670,842,926.79
  5. Step 5: Solve for x
    x = 95,670,842,926.79/287,876.58
  6. Step 6: Final answer
    x = 332,332.85

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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.