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Finding the Fourth Proportional to 379,530.40, 523,751.51 and 207,449.49

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Solution

The fourth proportional to 379,530.40, 523,751.51 and 207,449.49 is: 286,280.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,530.40 : 523,751.51 = 207,449.49 : x
  2. Step 2: Convert to fraction form
    379,530.40/523,751.51 = 207,449.49/x
  3. Step 3: Cross multiply
    379,530.40x = 523,751.51 × 207,449.49
  4. Step 4: Simplify right side
    379,530.40x = 108,651,983,923.77
  5. Step 5: Solve for x
    x = 108,651,983,923.77/379,530.40
  6. Step 6: Final answer
    x = 286,280.06

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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.