Home / 260,820,397.90-391,230,596.85-139,888,045.90

Finding the Fourth Proportional to 260,820,397.90, 391,230,596.85 and 139,888,045.90

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Solution

The fourth proportional to 260,820,397.90, 391,230,596.85 and 139,888,045.90 is: 209,832,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,820,397.90 : 391,230,596.85 = 139,888,045.90 : x
  2. Step 2: Convert to fraction form
    260,820,397.90/391,230,596.85 = 139,888,045.90/x
  3. Step 3: Cross multiply
    260,820,397.90x = 391,230,596.85 × 139,888,045.90
  4. Step 4: Simplify right side
    260,820,397.90x = 54,728,483,689,637,200
  5. Step 5: Solve for x
    x = 54,728,483,689,637,200/260,820,397.90
  6. Step 6: Final answer
    x = 209,832,068.85

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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.