Home / 280,079,187.39-386,543,171.05-159,406,514.64

Finding the Fourth Proportional to 280,079,187.39, 386,543,171.05 and 159,406,514.64

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Solution

The fourth proportional to 280,079,187.39, 386,543,171.05 and 159,406,514.64 is: 220,000,280.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079,187.39 : 386,543,171.05 = 159,406,514.64 : x
  2. Step 2: Convert to fraction form
    280,079,187.39/386,543,171.05 = 159,406,514.64/x
  3. Step 3: Cross multiply
    280,079,187.39x = 386,543,171.05 × 159,406,514.64
  4. Step 4: Simplify right side
    280,079,187.39x = 61,617,499,655,173,096
  5. Step 5: Solve for x
    x = 61,617,499,655,173,096/280,079,187.39
  6. Step 6: Final answer
    x = 220,000,280.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.