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Finding the Fourth Proportional to 386,228.73, 579,503.13 and 208,526.88

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Solution

The fourth proportional to 386,228.73, 579,503.13 and 208,526.88 is: 312,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,228.73 : 579,503.13 = 208,526.88 : x
  2. Step 2: Convert to fraction form
    386,228.73/579,503.13 = 208,526.88/x
  3. Step 3: Cross multiply
    386,228.73x = 579,503.13 × 208,526.88
  4. Step 4: Simplify right side
    386,228.73x = 120,841,979,649.13
  5. Step 5: Solve for x
    x = 120,841,979,649.13/386,228.73
  6. Step 6: Final answer
    x = 312,876.72

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1.5x scale

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.