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Finding the Fourth Proportional to 393,311.70, 590,259.15 and 260,147.70

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Solution

The fourth proportional to 393,311.70, 590,259.15 and 260,147.70 is: 390,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,311.70 : 590,259.15 = 260,147.70 : x
  2. Step 2: Convert to fraction form
    393,311.70/590,259.15 = 260,147.70/x
  3. Step 3: Cross multiply
    393,311.70x = 590,259.15 × 260,147.70
  4. Step 4: Simplify right side
    393,311.70x = 153,554,560,276.46
  5. Step 5: Solve for x
    x = 153,554,560,276.46/393,311.70
  6. Step 6: Final answer
    x = 390,414.42

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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.