Home / 420,681.64-580,564.20-229,712.80

Finding the Fourth Proportional to 420,681.64, 580,564.20 and 229,712.80

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Solution

The fourth proportional to 420,681.64, 580,564.20 and 229,712.80 is: 317,016.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,681.64 : 580,564.20 = 229,712.80 : x
  2. Step 2: Convert to fraction form
    420,681.64/580,564.20 = 229,712.80/x
  3. Step 3: Cross multiply
    420,681.64x = 580,564.20 × 229,712.80
  4. Step 4: Simplify right side
    420,681.64x = 133,363,027,961.76
  5. Step 5: Solve for x
    x = 133,363,027,961.76/420,681.64
  6. Step 6: Final answer
    x = 317,016.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.