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Finding the Fourth Proportional to 214,101.60, 321,152.40 and 143,599.20

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Solution

The fourth proportional to 214,101.60, 321,152.40 and 143,599.20 is: 215,398.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,101.60 : 321,152.40 = 143,599.20 : x
  2. Step 2: Convert to fraction form
    214,101.60/321,152.40 = 143,599.20/x
  3. Step 3: Cross multiply
    214,101.60x = 321,152.40 × 143,599.20
  4. Step 4: Simplify right side
    214,101.60x = 46,117,227,718.08
  5. Step 5: Solve for x
    x = 46,117,227,718.08/214,101.60
  6. Step 6: Final answer
    x = 215,398.80

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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.