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Finding the Fourth Proportional to 260,324.20, 390,615.90 and 102,557.80

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Solution

The fourth proportional to 260,324.20, 390,615.90 and 102,557.80 is: 153,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,324.20 : 390,615.90 = 102,557.80 : x
  2. Step 2: Convert to fraction form
    260,324.20/390,615.90 = 102,557.80/x
  3. Step 3: Cross multiply
    260,324.20x = 390,615.90 × 102,557.80
  4. Step 4: Simplify right side
    260,324.20x = 40,060,707,349.02
  5. Step 5: Solve for x
    x = 40,060,707,349.02/260,324.20
  6. Step 6: Final answer
    x = 153,887.76

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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.