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Finding the Fourth Proportional to 342,960.30, 514,440.45 and 306,218.70

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Solution

The fourth proportional to 342,960.30, 514,440.45 and 306,218.70 is: 459,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,960.30 : 514,440.45 = 306,218.70 : x
  2. Step 2: Convert to fraction form
    342,960.30/514,440.45 = 306,218.70/x
  3. Step 3: Cross multiply
    342,960.30x = 514,440.45 × 306,218.70
  4. Step 4: Simplify right side
    342,960.30x = 157,531,285,826.42
  5. Step 5: Solve for x
    x = 157,531,285,826.42/342,960.30
  6. Step 6: Final answer
    x = 459,328.05

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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.