Home / 261,080,565.66-391,555,718.01-76,811,352.30

Finding the Fourth Proportional to 261,080,565.66, 391,555,718.01 and 76,811,352.30

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Solution

The fourth proportional to 261,080,565.66, 391,555,718.01 and 76,811,352.30 is: 115,197,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,080,565.66 : 391,555,718.01 = 76,811,352.30 : x
  2. Step 2: Convert to fraction form
    261,080,565.66/391,555,718.01 = 76,811,352.30/x
  3. Step 3: Cross multiply
    261,080,565.66x = 391,555,718.01 × 76,811,352.30
  4. Step 4: Simplify right side
    261,080,565.66x = 30,075,924,201,145,564
  5. Step 5: Solve for x
    x = 30,075,924,201,145,564/261,080,565.66
  6. Step 6: Final answer
    x = 115,197,866.70

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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.