Home / 261,134,981.76-391,688,297.44-79,367,987.84

Finding the Fourth Proportional to 261,134,981.76, 391,688,297.44 and 79,367,987.84

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Solution

The fourth proportional to 261,134,981.76, 391,688,297.44 and 79,367,987.84 is: 119,047,673.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,134,981.76 : 391,688,297.44 = 79,367,987.84 : x
  2. Step 2: Convert to fraction form
    261,134,981.76/391,688,297.44 = 79,367,987.84/x
  3. Step 3: Cross multiply
    261,134,981.76x = 391,688,297.44 × 79,367,987.84
  4. Step 4: Simplify right side
    261,134,981.76x = 31,087,512,028,288,224
  5. Step 5: Solve for x
    x = 31,087,512,028,288,224/261,134,981.76
  6. Step 6: Final answer
    x = 119,047,673.42

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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.