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Finding the Fourth Proportional to 342,906.71, 473,108.87 and 221,856.26

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Solution

The fourth proportional to 342,906.71, 473,108.87 and 221,856.26 is: 306,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,906.71 : 473,108.87 = 221,856.26 : x
  2. Step 2: Convert to fraction form
    342,906.71/473,108.87 = 221,856.26/x
  3. Step 3: Cross multiply
    342,906.71x = 473,108.87 × 221,856.26
  4. Step 4: Simplify right side
    342,906.71x = 104,962,162,660.12
  5. Step 5: Solve for x
    x = 104,962,162,660.12/342,906.71
  6. Step 6: Final answer
    x = 306,095.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.