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Finding the Fourth Proportional to 371,936.74, 558,142.71 and 135,256.90

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Solution

The fourth proportional to 371,936.74, 558,142.71 and 135,256.90 is: 202,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,936.74 : 558,142.71 = 135,256.90 : x
  2. Step 2: Convert to fraction form
    371,936.74/558,142.71 = 135,256.90/x
  3. Step 3: Cross multiply
    371,936.74x = 558,142.71 × 135,256.90
  4. Step 4: Simplify right side
    371,936.74x = 75,492,652,712.20
  5. Step 5: Solve for x
    x = 75,492,652,712.20/371,936.74
  6. Step 6: Final answer
    x = 202,971.75

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1.5x scale

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.