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Finding the Fourth Proportional to 377,520.77, 520,978.37 and 207,754.90

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Solution

The fourth proportional to 377,520.77, 520,978.37 and 207,754.90 is: 286,701.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,520.77 : 520,978.37 = 207,754.90 : x
  2. Step 2: Convert to fraction form
    377,520.77/520,978.37 = 207,754.90/x
  3. Step 3: Cross multiply
    377,520.77x = 520,978.37 × 207,754.90
  4. Step 4: Simplify right side
    377,520.77x = 108,235,806,820.29
  5. Step 5: Solve for x
    x = 108,235,806,820.29/377,520.77
  6. Step 6: Final answer
    x = 286,701.59

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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.