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Finding the Fourth Proportional to 251,779.76, 347,456.10 and 138,602.52

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Solution

The fourth proportional to 251,779.76, 347,456.10 and 138,602.52 is: 191,271.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,779.76 : 347,456.10 = 138,602.52 : x
  2. Step 2: Convert to fraction form
    251,779.76/347,456.10 = 138,602.52/x
  3. Step 3: Cross multiply
    251,779.76x = 347,456.10 × 138,602.52
  4. Step 4: Simplify right side
    251,779.76x = 48,158,291,049.37
  5. Step 5: Solve for x
    x = 48,158,291,049.37/251,779.76
  6. Step 6: Final answer
    x = 191,271.49

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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.