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Finding the Fourth Proportional to 260,119.59, 390,210.62 and 91,605.06

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Solution

The fourth proportional to 260,119.59, 390,210.62 and 91,605.06 is: 137,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,119.59 : 390,210.62 = 91,605.06 : x
  2. Step 2: Convert to fraction form
    260,119.59/390,210.62 = 91,605.06/x
  3. Step 3: Cross multiply
    260,119.59x = 390,210.62 × 91,605.06
  4. Step 4: Simplify right side
    260,119.59x = 35,745,266,799.71
  5. Step 5: Solve for x
    x = 35,745,266,799.71/260,119.59
  6. Step 6: Final answer
    x = 137,418.59

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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.