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Finding the Fourth Proportional to 474,197.80, 711,296.70 and 208,085.80

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Solution

The fourth proportional to 474,197.80, 711,296.70 and 208,085.80 is: 312,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,197.80 : 711,296.70 = 208,085.80 : x
  2. Step 2: Convert to fraction form
    474,197.80/711,296.70 = 208,085.80/x
  3. Step 3: Cross multiply
    474,197.80x = 711,296.70 × 208,085.80
  4. Step 4: Simplify right side
    474,197.80x = 148,010,742,856.86
  5. Step 5: Solve for x
    x = 148,010,742,856.86/474,197.80
  6. Step 6: Final answer
    x = 312,128.70

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Similar ratio
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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.