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Finding the Fourth Proportional to 508,763.82, 702,058.95 and 282,391.50

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Solution

The fourth proportional to 508,763.82, 702,058.95 and 282,391.50 is: 389,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,763.82 : 702,058.95 = 282,391.50 : x
  2. Step 2: Convert to fraction form
    508,763.82/702,058.95 = 282,391.50/x
  3. Step 3: Cross multiply
    508,763.82x = 702,058.95 × 282,391.50
  4. Step 4: Simplify right side
    508,763.82x = 198,255,479,978.93
  5. Step 5: Solve for x
    x = 198,255,479,978.93/508,763.82
  6. Step 6: Final answer
    x = 389,680.78

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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.