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Finding the Fourth Proportional to 427,274.79, 640,975.95 and 157,382.37

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Solution

The fourth proportional to 427,274.79, 640,975.95 and 157,382.37 is: 236,097.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,274.79 : 640,975.95 = 157,382.37 : x
  2. Step 2: Convert to fraction form
    427,274.79/640,975.95 = 157,382.37/x
  3. Step 3: Cross multiply
    427,274.79x = 640,975.95 × 157,382.37
  4. Step 4: Simplify right side
    427,274.79x = 100,878,314,124.00
  5. Step 5: Solve for x
    x = 100,878,314,124.00/427,274.79
  6. Step 6: Final answer
    x = 236,097.04

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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.