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Finding the Fourth Proportional to 229,349.71, 343,888.30 and 87,205.38

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Solution

The fourth proportional to 229,349.71, 343,888.30 and 87,205.38 is: 130,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,349.71 : 343,888.30 = 87,205.38 : x
  2. Step 2: Convert to fraction form
    229,349.71/343,888.30 = 87,205.38/x
  3. Step 3: Cross multiply
    229,349.71x = 343,888.30 × 87,205.38
  4. Step 4: Simplify right side
    229,349.71x = 29,988,909,879.05
  5. Step 5: Solve for x
    x = 29,988,909,879.05/229,349.71
  6. Step 6: Final answer
    x = 130,756.26

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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.