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Finding the Fourth Proportional to 303,391, 418,679.76 and 169,255

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Solution

The fourth proportional to 303,391, 418,679.76 and 169,255 is: 233,572.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,391 : 418,679.76 = 169,255 : x
  2. Step 2: Convert to fraction form
    303,391/418,679.76 = 169,255/x
  3. Step 3: Cross multiply
    303,391x = 418,679.76 × 169,255
  4. Step 4: Simplify right side
    303,391x = 70,863,642,778.80
  5. Step 5: Solve for x
    x = 70,863,642,778.80/303,391
  6. Step 6: Final answer
    x = 233,572.00

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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.