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Finding the Fourth Proportional to 382,691.93, 528,187.97 and 253,402.36

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Solution

The fourth proportional to 382,691.93, 528,187.97 and 253,402.36 is: 349,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,691.93 : 528,187.97 = 253,402.36 : x
  2. Step 2: Convert to fraction form
    382,691.93/528,187.97 = 253,402.36/x
  3. Step 3: Cross multiply
    382,691.93x = 528,187.97 × 253,402.36
  4. Step 4: Simplify right side
    382,691.93x = 133,844,077,434.65
  5. Step 5: Solve for x
    x = 133,844,077,434.65/382,691.93
  6. Step 6: Final answer
    x = 349,743.67

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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.