Home / 260,140.38-390,211.47-73,151.88

Finding the Fourth Proportional to 260,140.38, 390,211.47 and 73,151.88

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Solution

The fourth proportional to 260,140.38, 390,211.47 and 73,151.88 is: 109,728.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,140.38 : 390,211.47 = 73,151.88 : x
  2. Step 2: Convert to fraction form
    260,140.38/390,211.47 = 73,151.88/x
  3. Step 3: Cross multiply
    260,140.38x = 390,211.47 × 73,151.88
  4. Step 4: Simplify right side
    260,140.38x = 28,544,702,628.06
  5. Step 5: Solve for x
    x = 28,544,702,628.06/260,140.38
  6. Step 6: Final answer
    x = 109,728.07

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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.