Home / 420,248.17-579,941.71-229,261.60

Finding the Fourth Proportional to 420,248.17, 579,941.71 and 229,261.60

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Solution

The fourth proportional to 420,248.17, 579,941.71 and 229,261.60 is: 316,380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,248.17 : 579,941.71 = 229,261.60 : x
  2. Step 2: Convert to fraction form
    420,248.17/579,941.71 = 229,261.60/x
  3. Step 3: Cross multiply
    420,248.17x = 579,941.71 × 229,261.60
  4. Step 4: Simplify right side
    420,248.17x = 132,958,364,341.34
  5. Step 5: Solve for x
    x = 132,958,364,341.34/420,248.17
  6. Step 6: Final answer
    x = 316,380.59

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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.