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Finding the Fourth Proportional to 213,663.60, 320,652.90 and 101,343.42

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Solution

The fourth proportional to 213,663.60, 320,652.90 and 101,343.42 is: 152,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,663.60 : 320,652.90 = 101,343.42 : x
  2. Step 2: Convert to fraction form
    213,663.60/320,652.90 = 101,343.42/x
  3. Step 3: Cross multiply
    213,663.60x = 320,652.90 × 101,343.42
  4. Step 4: Simplify right side
    213,663.60x = 32,496,061,518.92
  5. Step 5: Solve for x
    x = 32,496,061,518.92/213,663.60
  6. Step 6: Final answer
    x = 152,089.83

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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.