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Finding the Fourth Proportional to 377,079.13, 520,221.96 and 215,848.02

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Solution

The fourth proportional to 377,079.13, 520,221.96 and 215,848.02 is: 297,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,079.13 : 520,221.96 = 215,848.02 : x
  2. Step 2: Convert to fraction form
    377,079.13/520,221.96 = 215,848.02/x
  3. Step 3: Cross multiply
    377,079.13x = 520,221.96 × 215,848.02
  4. Step 4: Simplify right side
    377,079.13x = 112,288,880,026.52
  5. Step 5: Solve for x
    x = 112,288,880,026.52/377,079.13
  6. Step 6: Final answer
    x = 297,785.98

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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.