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Finding the Fourth Proportional to 259,518.80, 389,278.20 and 243,772.40

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Solution

The fourth proportional to 259,518.80, 389,278.20 and 243,772.40 is: 365,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,518.80 : 389,278.20 = 243,772.40 : x
  2. Step 2: Convert to fraction form
    259,518.80/389,278.20 = 243,772.40/x
  3. Step 3: Cross multiply
    259,518.80x = 389,278.20 × 243,772.40
  4. Step 4: Simplify right side
    259,518.80x = 94,895,281,081.68
  5. Step 5: Solve for x
    x = 94,895,281,081.68/259,518.80
  6. Step 6: Final answer
    x = 365,658.60

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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.