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Finding the Fourth Proportional to 260,023.70, 390,035.55 and 171,377.30

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Solution

The fourth proportional to 260,023.70, 390,035.55 and 171,377.30 is: 257,065.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,023.70 : 390,035.55 = 171,377.30 : x
  2. Step 2: Convert to fraction form
    260,023.70/390,035.55 = 171,377.30/x
  3. Step 3: Cross multiply
    260,023.70x = 390,035.55 × 171,377.30
  4. Step 4: Simplify right side
    260,023.70x = 66,843,239,463.02
  5. Step 5: Solve for x
    x = 66,843,239,463.02/260,023.70
  6. Step 6: Final answer
    x = 257,065.95

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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.