Home / 287,590,717.80-431,386,076.70-165,146,711.40

Finding the Fourth Proportional to 287,590,717.80, 431,386,076.70 and 165,146,711.40

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Solution

The fourth proportional to 287,590,717.80, 431,386,076.70 and 165,146,711.40 is: 247,720,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,590,717.80 : 431,386,076.70 = 165,146,711.40 : x
  2. Step 2: Convert to fraction form
    287,590,717.80/431,386,076.70 = 165,146,711.40/x
  3. Step 3: Cross multiply
    287,590,717.80x = 431,386,076.70 × 165,146,711.40
  4. Step 4: Simplify right side
    287,590,717.80x = 71,241,991,910,753,168
  5. Step 5: Solve for x
    x = 71,241,991,910,753,168/287,590,717.80
  6. Step 6: Final answer
    x = 247,720,067.10

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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.