Home / 288,013,909.20-432,020,863.80-211,486,405.20

Finding the Fourth Proportional to 288,013,909.20, 432,020,863.80 and 211,486,405.20

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Solution

The fourth proportional to 288,013,909.20, 432,020,863.80 and 211,486,405.20 is: 317,229,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,013,909.20 : 432,020,863.80 = 211,486,405.20 : x
  2. Step 2: Convert to fraction form
    288,013,909.20/432,020,863.80 = 211,486,405.20/x
  3. Step 3: Cross multiply
    288,013,909.20x = 432,020,863.80 × 211,486,405.20
  4. Step 4: Simplify right side
    288,013,909.20x = 91,366,539,456,460,816
  5. Step 5: Solve for x
    x = 91,366,539,456,460,816/288,013,909.20
  6. Step 6: Final answer
    x = 317,229,607.80

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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.