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Finding the Fourth Proportional to 260,468.67, 390,718.15 and 100,545.51

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Solution

The fourth proportional to 260,468.67, 390,718.15 and 100,545.51 is: 150,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,468.67 : 390,718.15 = 100,545.51 : x
  2. Step 2: Convert to fraction form
    260,468.67/390,718.15 = 100,545.51/x
  3. Step 3: Cross multiply
    260,468.67x = 390,718.15 × 100,545.51
  4. Step 4: Simplify right side
    260,468.67x = 39,284,956,194.92
  5. Step 5: Solve for x
    x = 39,284,956,194.92/260,468.67
  6. Step 6: Final answer
    x = 150,824.11

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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.