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Finding the Fourth Proportional to 377,221.16, 520,554.80 and 207,455.42

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Solution

The fourth proportional to 377,221.16, 520,554.80 and 207,455.42 is: 286,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,221.16 : 520,554.80 = 207,455.42 : x
  2. Step 2: Convert to fraction form
    377,221.16/520,554.80 = 207,455.42/x
  3. Step 3: Cross multiply
    377,221.16x = 520,554.80 × 207,455.42
  4. Step 4: Simplify right side
    377,221.16x = 107,991,914,667.02
  5. Step 5: Solve for x
    x = 107,991,914,667.02/377,221.16
  6. Step 6: Final answer
    x = 286,282.76

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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.