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Finding the Fourth Proportional to 377,054.40, 520,321.80 and 207,287.28

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Solution

The fourth proportional to 377,054.40, 520,321.80 and 207,287.28 is: 286,049.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,054.40 : 520,321.80 = 207,287.28 : x
  2. Step 2: Convert to fraction form
    377,054.40/520,321.80 = 207,287.28/x
  3. Step 3: Cross multiply
    377,054.40x = 520,321.80 × 207,287.28
  4. Step 4: Simplify right side
    377,054.40x = 107,856,090,646.70
  5. Step 5: Solve for x
    x = 107,856,090,646.70/377,054.40
  6. Step 6: Final answer
    x = 286,049.15

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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.