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Finding the Fourth Proportional to 390,250.80, 585,376.20 and 295,772.40

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Solution

The fourth proportional to 390,250.80, 585,376.20 and 295,772.40 is: 443,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,250.80 : 585,376.20 = 295,772.40 : x
  2. Step 2: Convert to fraction form
    390,250.80/585,376.20 = 295,772.40/x
  3. Step 3: Cross multiply
    390,250.80x = 585,376.20 × 295,772.40
  4. Step 4: Simplify right side
    390,250.80x = 173,138,123,576.88
  5. Step 5: Solve for x
    x = 173,138,123,576.88/390,250.80
  6. Step 6: Final answer
    x = 443,658.60

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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.