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Finding the Fourth Proportional to 611,211.10, 916,816.65 and 162,001.30

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Solution

The fourth proportional to 611,211.10, 916,816.65 and 162,001.30 is: 243,001.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,211.10 : 916,816.65 = 162,001.30 : x
  2. Step 2: Convert to fraction form
    611,211.10/916,816.65 = 162,001.30/x
  3. Step 3: Cross multiply
    611,211.10x = 916,816.65 × 162,001.30
  4. Step 4: Simplify right side
    611,211.10x = 148,525,489,161.65
  5. Step 5: Solve for x
    x = 148,525,489,161.65/611,211.10
  6. Step 6: Final answer
    x = 243,001.95

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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.