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Finding the Fourth Proportional to 502,668.66, 693,665.19 and 276,312.54

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Solution

The fourth proportional to 502,668.66, 693,665.19 and 276,312.54 is: 381,301.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,668.66 : 693,665.19 = 276,312.54 : x
  2. Step 2: Convert to fraction form
    502,668.66/693,665.19 = 276,312.54/x
  3. Step 3: Cross multiply
    502,668.66x = 693,665.19 × 276,312.54
  4. Step 4: Simplify right side
    502,668.66x = 191,668,390,558.48
  5. Step 5: Solve for x
    x = 191,668,390,558.48/502,668.66
  6. Step 6: Final answer
    x = 381,301.65

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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.