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Finding the Fourth Proportional to 284,491.51, 392,625.44 and 155,449.60

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Solution

The fourth proportional to 284,491.51, 392,625.44 and 155,449.60 is: 214,535.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,491.51 : 392,625.44 = 155,449.60 : x
  2. Step 2: Convert to fraction form
    284,491.51/392,625.44 = 155,449.60/x
  3. Step 3: Cross multiply
    284,491.51x = 392,625.44 × 155,449.60
  4. Step 4: Simplify right side
    284,491.51x = 61,033,466,421.95
  5. Step 5: Solve for x
    x = 61,033,466,421.95/284,491.51
  6. Step 6: Final answer
    x = 214,535.28

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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.