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Finding the Fourth Proportional to 251,888.10, 347,579.12 and 142,957.78

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Solution

The fourth proportional to 251,888.10, 347,579.12 and 142,957.78 is: 197,266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,888.10 : 347,579.12 = 142,957.78 : x
  2. Step 2: Convert to fraction form
    251,888.10/347,579.12 = 142,957.78/x
  3. Step 3: Cross multiply
    251,888.10x = 347,579.12 × 142,957.78
  4. Step 4: Simplify right side
    251,888.10x = 49,689,139,369.55
  5. Step 5: Solve for x
    x = 49,689,139,369.55/251,888.10
  6. Step 6: Final answer
    x = 197,266.72

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1.5x scale

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.