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Finding the Fourth Proportional to 212,841.56, 319,262.34 and 72,601.40

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Solution

The fourth proportional to 212,841.56, 319,262.34 and 72,601.40 is: 108,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,841.56 : 319,262.34 = 72,601.40 : x
  2. Step 2: Convert to fraction form
    212,841.56/319,262.34 = 72,601.40/x
  3. Step 3: Cross multiply
    212,841.56x = 319,262.34 × 72,601.40
  4. Step 4: Simplify right side
    212,841.56x = 23,178,891,254.96
  5. Step 5: Solve for x
    x = 23,178,891,254.96/212,841.56
  6. Step 6: Final answer
    x = 108,902.10

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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.