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Finding the Fourth Proportional to 389,867.72, 585,034.85 and 358,141.64

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Solution

The fourth proportional to 389,867.72, 585,034.85 and 358,141.64 is: 537,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,867.72 : 585,034.85 = 358,141.64 : x
  2. Step 2: Convert to fraction form
    389,867.72/585,034.85 = 358,141.64/x
  3. Step 3: Cross multiply
    389,867.72x = 585,034.85 × 358,141.64
  4. Step 4: Simplify right side
    389,867.72x = 209,525,338,606.33
  5. Step 5: Solve for x
    x = 209,525,338,606.33/389,867.72
  6. Step 6: Final answer
    x = 537,426.75

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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.