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Finding the Fourth Proportional to 260,010.59, 390,035.50 and 77,626.96

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Solution

The fourth proportional to 260,010.59, 390,035.50 and 77,626.96 is: 116,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,010.59 : 390,035.50 = 77,626.96 : x
  2. Step 2: Convert to fraction form
    260,010.59/390,035.50 = 77,626.96/x
  3. Step 3: Cross multiply
    260,010.59x = 390,035.50 × 77,626.96
  4. Step 4: Simplify right side
    260,010.59x = 30,277,268,987.92
  5. Step 5: Solve for x
    x = 30,277,268,987.92/260,010.59
  6. Step 6: Final answer
    x = 116,446.29

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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.