Home / 260,867,335.80-391,301,003.70-256,836,257.40

Finding the Fourth Proportional to 260,867,335.80, 391,301,003.70 and 256,836,257.40

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Solution

The fourth proportional to 260,867,335.80, 391,301,003.70 and 256,836,257.40 is: 385,254,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,867,335.80 : 391,301,003.70 = 256,836,257.40 : x
  2. Step 2: Convert to fraction form
    260,867,335.80/391,301,003.70 = 256,836,257.40/x
  3. Step 3: Cross multiply
    260,867,335.80x = 391,301,003.70 × 256,836,257.40
  4. Step 4: Simplify right side
    260,867,335.80x = 100,500,285,307,171,552
  5. Step 5: Solve for x
    x = 100,500,285,307,171,552/260,867,335.80
  6. Step 6: Final answer
    x = 385,254,386.10

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1.5x scale

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.