Home / 260,430.18-390,656.61-127,422.42

Finding the Fourth Proportional to 260,430.18, 390,656.61 and 127,422.42

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Solution

The fourth proportional to 260,430.18, 390,656.61 and 127,422.42 is: 191,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,430.18 : 390,656.61 = 127,422.42 : x
  2. Step 2: Convert to fraction form
    260,430.18/390,656.61 = 127,422.42/x
  3. Step 3: Cross multiply
    260,430.18x = 390,656.61 × 127,422.42
  4. Step 4: Simplify right side
    260,430.18x = 49,778,410,635.20
  5. Step 5: Solve for x
    x = 49,778,410,635.20/260,430.18
  6. Step 6: Final answer
    x = 191,139.18

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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.