Home / 287,712,843.90-431,569,265.85-164,764,952.70

Finding the Fourth Proportional to 287,712,843.90, 431,569,265.85 and 164,764,952.70

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Solution

The fourth proportional to 287,712,843.90, 431,569,265.85 and 164,764,952.70 is: 247,147,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,843.90 : 431,569,265.85 = 164,764,952.70 : x
  2. Step 2: Convert to fraction form
    287,712,843.90/431,569,265.85 = 164,764,952.70/x
  3. Step 3: Cross multiply
    287,712,843.90x = 431,569,265.85 × 164,764,952.70
  4. Step 4: Simplify right side
    287,712,843.90x = 71,107,489,674,548,976
  5. Step 5: Solve for x
    x = 71,107,489,674,548,976/287,712,843.90
  6. Step 6: Final answer
    x = 247,147,429.05

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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.