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Finding the Fourth Proportional to 353,545.20, 529,540.20 and 306,889.20

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Solution

The fourth proportional to 353,545.20, 529,540.20 and 306,889.20 is: 459,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,545.20 : 529,540.20 = 306,889.20 : x
  2. Step 2: Convert to fraction form
    353,545.20/529,540.20 = 306,889.20/x
  3. Step 3: Cross multiply
    353,545.20x = 529,540.20 × 306,889.20
  4. Step 4: Simplify right side
    353,545.20x = 162,510,168,345.84
  5. Step 5: Solve for x
    x = 162,510,168,345.84/353,545.20
  6. Step 6: Final answer
    x = 459,658.82

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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.