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Finding the Fourth Proportional to 218,432.40, 327,648.60 and 70,688.40

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Solution

The fourth proportional to 218,432.40, 327,648.60 and 70,688.40 is: 106,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,432.40 : 327,648.60 = 70,688.40 : x
  2. Step 2: Convert to fraction form
    218,432.40/327,648.60 = 70,688.40/x
  3. Step 3: Cross multiply
    218,432.40x = 327,648.60 × 70,688.40
  4. Step 4: Simplify right side
    218,432.40x = 23,160,955,296.24
  5. Step 5: Solve for x
    x = 23,160,955,296.24/218,432.40
  6. Step 6: Final answer
    x = 106,032.60

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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.