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Finding the Fourth Proportional to 214,456.60, 321,800.10 and 89,810.20

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Solution

The fourth proportional to 214,456.60, 321,800.10 and 89,810.20 is: 134,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,456.60 : 321,800.10 = 89,810.20 : x
  2. Step 2: Convert to fraction form
    214,456.60/321,800.10 = 89,810.20/x
  3. Step 3: Cross multiply
    214,456.60x = 321,800.10 × 89,810.20
  4. Step 4: Simplify right side
    214,456.60x = 28,900,931,341.02
  5. Step 5: Solve for x
    x = 28,900,931,341.02/214,456.60
  6. Step 6: Final answer
    x = 134,763.54

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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.