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Finding the Fourth Proportional to 353,123.80, 528,908.10 and 247,370.20

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Solution

The fourth proportional to 353,123.80, 528,908.10 and 247,370.20 is: 370,510.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,123.80 : 528,908.10 = 247,370.20 : x
  2. Step 2: Convert to fraction form
    353,123.80/528,908.10 = 247,370.20/x
  3. Step 3: Cross multiply
    353,123.80x = 528,908.10 × 247,370.20
  4. Step 4: Simplify right side
    353,123.80x = 130,836,102,478.62
  5. Step 5: Solve for x
    x = 130,836,102,478.62/353,123.80
  6. Step 6: Final answer
    x = 370,510.58

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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.