Home / 260,867,332.80-391,300,999.20-256,836,254.40

Finding the Fourth Proportional to 260,867,332.80, 391,300,999.20 and 256,836,254.40

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Solution

The fourth proportional to 260,867,332.80, 391,300,999.20 and 256,836,254.40 is: 385,254,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,867,332.80 : 391,300,999.20 = 256,836,254.40 : x
  2. Step 2: Convert to fraction form
    260,867,332.80/391,300,999.20 = 256,836,254.40/x
  3. Step 3: Cross multiply
    260,867,332.80x = 391,300,999.20 × 256,836,254.40
  4. Step 4: Simplify right side
    260,867,332.80x = 100,500,282,977,505,392
  5. Step 5: Solve for x
    x = 100,500,282,977,505,392/260,867,332.80
  6. Step 6: Final answer
    x = 385,254,381.60

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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.