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Finding the Fourth Proportional to 272,869.74, 408,548.88 and 139,462.74

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Solution

The fourth proportional to 272,869.74, 408,548.88 and 139,462.74 is: 208,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,869.74 : 408,548.88 = 139,462.74 : x
  2. Step 2: Convert to fraction form
    272,869.74/408,548.88 = 139,462.74/x
  3. Step 3: Cross multiply
    272,869.74x = 408,548.88 × 139,462.74
  4. Step 4: Simplify right side
    272,869.74x = 56,977,346,228.73
  5. Step 5: Solve for x
    x = 56,977,346,228.73/272,869.74
  6. Step 6: Final answer
    x = 208,807.86

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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.