Home / 214,459.20-321,631.20-89,774.40

Finding the Fourth Proportional to 214,459.20, 321,631.20 and 89,774.40

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Solution

The fourth proportional to 214,459.20, 321,631.20 and 89,774.40 is: 134,637.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,459.20 : 321,631.20 = 89,774.40 : x
  2. Step 2: Convert to fraction form
    214,459.20/321,631.20 = 89,774.40/x
  3. Step 3: Cross multiply
    214,459.20x = 321,631.20 × 89,774.40
  4. Step 4: Simplify right side
    214,459.20x = 28,874,248,001.28
  5. Step 5: Solve for x
    x = 28,874,248,001.28/214,459.20
  6. Step 6: Final answer
    x = 134,637.49

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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.