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Finding the Fourth Proportional to 251,887.61, 347,578.44 and 142,957.29

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Solution

The fourth proportional to 251,887.61, 347,578.44 and 142,957.29 is: 197,266.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,887.61 : 347,578.44 = 142,957.29 : x
  2. Step 2: Convert to fraction form
    251,887.61/347,578.44 = 142,957.29/x
  3. Step 3: Cross multiply
    251,887.61x = 347,578.44 × 142,957.29
  4. Step 4: Simplify right side
    251,887.61x = 49,688,871,844.83
  5. Step 5: Solve for x
    x = 49,688,871,844.83/251,887.61
  6. Step 6: Final answer
    x = 197,266.05

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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.