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Finding the Fourth Proportional to 263,953.80, 395,930.70 and 260,017.20

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Solution

The fourth proportional to 263,953.80, 395,930.70 and 260,017.20 is: 390,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,953.80 : 395,930.70 = 260,017.20 : x
  2. Step 2: Convert to fraction form
    263,953.80/395,930.70 = 260,017.20/x
  3. Step 3: Cross multiply
    263,953.80x = 395,930.70 × 260,017.20
  4. Step 4: Simplify right side
    263,953.80x = 102,948,792,008.04
  5. Step 5: Solve for x
    x = 102,948,792,008.04/263,953.80
  6. Step 6: Final answer
    x = 390,025.80

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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.