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Finding the Fourth Proportional to 251,438.70, 377,395.08 and 91,669.14

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Solution

The fourth proportional to 251,438.70, 377,395.08 and 91,669.14 is: 137,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,438.70 : 377,395.08 = 91,669.14 : x
  2. Step 2: Convert to fraction form
    251,438.70/377,395.08 = 91,669.14/x
  3. Step 3: Cross multiply
    251,438.70x = 377,395.08 × 91,669.14
  4. Step 4: Simplify right side
    251,438.70x = 34,595,482,423.83
  5. Step 5: Solve for x
    x = 34,595,482,423.83/251,438.70
  6. Step 6: Final answer
    x = 137,590.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.