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Finding the Fourth Proportional to 273,859.90, 410,833.05 and 86,890.30

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Solution

The fourth proportional to 273,859.90, 410,833.05 and 86,890.30 is: 130,349.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,859.90 : 410,833.05 = 86,890.30 : x
  2. Step 2: Convert to fraction form
    273,859.90/410,833.05 = 86,890.30/x
  3. Step 3: Cross multiply
    273,859.90x = 410,833.05 × 86,890.30
  4. Step 4: Simplify right side
    273,859.90x = 35,697,406,964.42
  5. Step 5: Solve for x
    x = 35,697,406,964.42/273,859.90
  6. Step 6: Final answer
    x = 130,349.16

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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.