Home / 287,712,000.20-431,568,000.30-164,890,080.20

Finding the Fourth Proportional to 287,712,000.20, 431,568,000.30 and 164,890,080.20

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Solution

The fourth proportional to 287,712,000.20, 431,568,000.30 and 164,890,080.20 is: 247,335,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,000.20 : 431,568,000.30 = 164,890,080.20 : x
  2. Step 2: Convert to fraction form
    287,712,000.20/431,568,000.30 = 164,890,080.20/x
  3. Step 3: Cross multiply
    287,712,000.20x = 431,568,000.30 × 164,890,080.20
  4. Step 4: Simplify right side
    287,712,000.20x = 71,161,282,181,220,624
  5. Step 5: Solve for x
    x = 71,161,282,181,220,624/287,712,000.20
  6. Step 6: Final answer
    x = 247,335,120.30

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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.