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Finding the Fourth Proportional to 246,580.65, 369,866.88 and 78,100.65

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Solution

The fourth proportional to 246,580.65, 369,866.88 and 78,100.65 is: 117,149.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,580.65 : 369,866.88 = 78,100.65 : x
  2. Step 2: Convert to fraction form
    246,580.65/369,866.88 = 78,100.65/x
  3. Step 3: Cross multiply
    246,580.65x = 369,866.88 × 78,100.65
  4. Step 4: Simplify right side
    246,580.65x = 28,886,843,741.47
  5. Step 5: Solve for x
    x = 28,886,843,741.47/246,580.65
  6. Step 6: Final answer
    x = 117,149.68

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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.