Home / 387,931.94-582,165.50-135,214.55

Finding the Fourth Proportional to 387,931.94, 582,165.50 and 135,214.55

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Solution

The fourth proportional to 387,931.94, 582,165.50 and 135,214.55 is: 202,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,931.94 : 582,165.50 = 135,214.55 : x
  2. Step 2: Convert to fraction form
    387,931.94/582,165.50 = 135,214.55/x
  3. Step 3: Cross multiply
    387,931.94x = 582,165.50 × 135,214.55
  4. Step 4: Simplify right side
    387,931.94x = 78,717,242,521.12
  5. Step 5: Solve for x
    x = 78,717,242,521.12/387,931.94
  6. Step 6: Final answer
    x = 202,915.09

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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.