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Finding the Fourth Proportional to 316,630.95, 436,947.59 and 171,436.02

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Solution

The fourth proportional to 316,630.95, 436,947.59 and 171,436.02 is: 236,580.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,630.95 : 436,947.59 = 171,436.02 : x
  2. Step 2: Convert to fraction form
    316,630.95/436,947.59 = 171,436.02/x
  3. Step 3: Cross multiply
    316,630.95x = 436,947.59 × 171,436.02
  4. Step 4: Simplify right side
    316,630.95x = 74,908,554,921.01
  5. Step 5: Solve for x
    x = 74,908,554,921.01/316,630.95
  6. Step 6: Final answer
    x = 236,580.02

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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.