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Finding the Fourth Proportional to 145,211.10, 217,816.65 and 141,323.10

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Solution

The fourth proportional to 145,211.10, 217,816.65 and 141,323.10 is: 211,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,211.10 : 217,816.65 = 141,323.10 : x
  2. Step 2: Convert to fraction form
    145,211.10/217,816.65 = 141,323.10/x
  3. Step 3: Cross multiply
    145,211.10x = 217,816.65 × 141,323.10
  4. Step 4: Simplify right side
    145,211.10x = 30,782,524,209.62
  5. Step 5: Solve for x
    x = 30,782,524,209.62/145,211.10
  6. Step 6: Final answer
    x = 211,984.65

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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.