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Finding the Fourth Proportional to 545,886.41, 818,829.61 and 213,229.13

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Solution

The fourth proportional to 545,886.41, 818,829.61 and 213,229.13 is: 319,843.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,886.41 : 818,829.61 = 213,229.13 : x
  2. Step 2: Convert to fraction form
    545,886.41/818,829.61 = 213,229.13/x
  3. Step 3: Cross multiply
    545,886.41x = 818,829.61 × 213,229.13
  4. Step 4: Simplify right side
    545,886.41x = 174,598,320,731.32
  5. Step 5: Solve for x
    x = 174,598,320,731.32/545,886.41
  6. Step 6: Final answer
    x = 319,843.69

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Double scale
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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.