Home / 260,430.28-390,538.50-82,889.62

Finding the Fourth Proportional to 260,430.28, 390,538.50 and 82,889.62

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Solution

The fourth proportional to 260,430.28, 390,538.50 and 82,889.62 is: 124,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,430.28 : 390,538.50 = 82,889.62 : x
  2. Step 2: Convert to fraction form
    260,430.28/390,538.50 = 82,889.62/x
  3. Step 3: Cross multiply
    260,430.28x = 390,538.50 × 82,889.62
  4. Step 4: Simplify right side
    260,430.28x = 32,371,587,860.37
  5. Step 5: Solve for x
    x = 32,371,587,860.37/260,430.28
  6. Step 6: Final answer
    x = 124,300.40

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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.