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Finding the Fourth Proportional to 191,212.80, 286,819.20 and 147,062.40

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Solution

The fourth proportional to 191,212.80, 286,819.20 and 147,062.40 is: 220,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,212.80 : 286,819.20 = 147,062.40 : x
  2. Step 2: Convert to fraction form
    191,212.80/286,819.20 = 147,062.40/x
  3. Step 3: Cross multiply
    191,212.80x = 286,819.20 × 147,062.40
  4. Step 4: Simplify right side
    191,212.80x = 42,180,319,918.08
  5. Step 5: Solve for x
    x = 42,180,319,918.08/191,212.80
  6. Step 6: Final answer
    x = 220,593.60

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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.