Home / 287,712,003.60-431,568,005.40-126,153,939.60

Finding the Fourth Proportional to 287,712,003.60, 431,568,005.40 and 126,153,939.60

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Solution

The fourth proportional to 287,712,003.60, 431,568,005.40 and 126,153,939.60 is: 189,230,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,003.60 : 431,568,005.40 = 126,153,939.60 : x
  2. Step 2: Convert to fraction form
    287,712,003.60/431,568,005.40 = 126,153,939.60/x
  3. Step 3: Cross multiply
    287,712,003.60x = 431,568,005.40 × 126,153,939.60
  4. Step 4: Simplify right side
    287,712,003.60x = 54,444,004,086,524,072
  5. Step 5: Solve for x
    x = 54,444,004,086,524,072/287,712,003.60
  6. Step 6: Final answer
    x = 189,230,909.40

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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.