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Finding the Fourth Proportional to 611,281.80, 916,922.70 and 162,001.80

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Solution

The fourth proportional to 611,281.80, 916,922.70 and 162,001.80 is: 243,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,281.80 : 916,922.70 = 162,001.80 : x
  2. Step 2: Convert to fraction form
    611,281.80/916,922.70 = 162,001.80/x
  3. Step 3: Cross multiply
    611,281.80x = 916,922.70 × 162,001.80
  4. Step 4: Simplify right side
    611,281.80x = 148,543,127,860.86
  5. Step 5: Solve for x
    x = 148,543,127,860.86/611,281.80
  6. Step 6: Final answer
    x = 243,002.70

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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.