Home / 287,712,031.20-431,568,046.80-164,890,111.20

Finding the Fourth Proportional to 287,712,031.20, 431,568,046.80 and 164,890,111.20

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Solution

The fourth proportional to 287,712,031.20, 431,568,046.80 and 164,890,111.20 is: 247,335,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,712,031.20 : 431,568,046.80 = 164,890,111.20 : x
  2. Step 2: Convert to fraction form
    287,712,031.20/431,568,046.80 = 164,890,111.20/x
  3. Step 3: Cross multiply
    287,712,031.20x = 431,568,046.80 × 164,890,111.20
  4. Step 4: Simplify right side
    287,712,031.20x = 71,161,303,227,218,800
  5. Step 5: Solve for x
    x = 71,161,303,227,218,800/287,712,031.20
  6. Step 6: Final answer
    x = 247,335,166.80

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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.