Home / 260,014.10-390,021.15-102,247.70

Finding the Fourth Proportional to 260,014.10, 390,021.15 and 102,247.70

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Solution

The fourth proportional to 260,014.10, 390,021.15 and 102,247.70 is: 153,371.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,014.10 : 390,021.15 = 102,247.70 : x
  2. Step 2: Convert to fraction form
    260,014.10/390,021.15 = 102,247.70/x
  3. Step 3: Cross multiply
    260,014.10x = 390,021.15 × 102,247.70
  4. Step 4: Simplify right side
    260,014.10x = 39,878,765,538.86
  5. Step 5: Solve for x
    x = 39,878,765,538.86/260,014.10
  6. Step 6: Final answer
    x = 153,371.55

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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.