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Finding the Fourth Proportional to 338,793.30, 508,189.95 and 286,305.30

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Solution

The fourth proportional to 338,793.30, 508,189.95 and 286,305.30 is: 429,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,793.30 : 508,189.95 = 286,305.30 : x
  2. Step 2: Convert to fraction form
    338,793.30/508,189.95 = 286,305.30/x
  3. Step 3: Cross multiply
    338,793.30x = 508,189.95 × 286,305.30
  4. Step 4: Simplify right side
    338,793.30x = 145,497,476,091.74
  5. Step 5: Solve for x
    x = 145,497,476,091.74/338,793.30
  6. Step 6: Final answer
    x = 429,457.95

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Similar ratio
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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.