Home / 287,207.60-429,872.20-211,285.92

Finding the Fourth Proportional to 287,207.60, 429,872.20 and 211,285.92

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Solution

The fourth proportional to 287,207.60, 429,872.20 and 211,285.92 is: 316,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,207.60 : 429,872.20 = 211,285.92 : x
  2. Step 2: Convert to fraction form
    287,207.60/429,872.20 = 211,285.92/x
  3. Step 3: Cross multiply
    287,207.60x = 429,872.20 × 211,285.92
  4. Step 4: Simplify right side
    287,207.60x = 90,825,943,259.42
  5. Step 5: Solve for x
    x = 90,825,943,259.42/287,207.60
  6. Step 6: Final answer
    x = 316,237.95

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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.