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Finding the Fourth Proportional to 543,143.48, 749,555.03 and 313,696.46

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Solution

The fourth proportional to 543,143.48, 749,555.03 and 313,696.46 is: 432,910.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,143.48 : 749,555.03 = 313,696.46 : x
  2. Step 2: Convert to fraction form
    543,143.48/749,555.03 = 313,696.46/x
  3. Step 3: Cross multiply
    543,143.48x = 749,555.03 × 313,696.46
  4. Step 4: Simplify right side
    543,143.48x = 235,132,762,144.32
  5. Step 5: Solve for x
    x = 235,132,762,144.32/543,143.48
  6. Step 6: Final answer
    x = 432,910.96

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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.