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Finding the Fourth Proportional to 260,034.70, 390,052.05 and 231,004.30

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Solution

The fourth proportional to 260,034.70, 390,052.05 and 231,004.30 is: 346,506.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,034.70 : 390,052.05 = 231,004.30 : x
  2. Step 2: Convert to fraction form
    260,034.70/390,052.05 = 231,004.30/x
  3. Step 3: Cross multiply
    260,034.70x = 390,052.05 × 231,004.30
  4. Step 4: Simplify right side
    260,034.70x = 90,103,700,773.82
  5. Step 5: Solve for x
    x = 90,103,700,773.82/260,034.70
  6. Step 6: Final answer
    x = 346,506.45

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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.