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Finding the Fourth Proportional to 245,990.61, 369,037.68 and 139,425.62

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Solution

The fourth proportional to 245,990.61, 369,037.68 and 139,425.62 is: 209,167.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,990.61 : 369,037.68 = 139,425.62 : x
  2. Step 2: Convert to fraction form
    245,990.61/369,037.68 = 139,425.62/x
  3. Step 3: Cross multiply
    245,990.61x = 369,037.68 × 139,425.62
  4. Step 4: Simplify right side
    245,990.61x = 51,453,306,468.62
  5. Step 5: Solve for x
    x = 51,453,306,468.62/245,990.61
  6. Step 6: Final answer
    x = 209,167.77

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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.