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Finding the Fourth Proportional to 260,468.89, 390,718.47 and 100,545.73

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Solution

The fourth proportional to 260,468.89, 390,718.47 and 100,545.73 is: 150,824.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,468.89 : 390,718.47 = 100,545.73 : x
  2. Step 2: Convert to fraction form
    260,468.89/390,718.47 = 100,545.73/x
  3. Step 3: Cross multiply
    260,468.89x = 390,718.47 × 100,545.73
  4. Step 4: Simplify right side
    260,468.89x = 39,285,074,656.08
  5. Step 5: Solve for x
    x = 39,285,074,656.08/260,468.89
  6. Step 6: Final answer
    x = 150,824.44

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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.