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Finding the Fourth Proportional to 246,638.85, 369,968.66 and 78,155.47

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Solution

The fourth proportional to 246,638.85, 369,968.66 and 78,155.47 is: 117,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,638.85 : 369,968.66 = 78,155.47 : x
  2. Step 2: Convert to fraction form
    246,638.85/369,968.66 = 78,155.47/x
  3. Step 3: Cross multiply
    246,638.85x = 369,968.66 × 78,155.47
  4. Step 4: Simplify right side
    246,638.85x = 28,915,074,507.57
  5. Step 5: Solve for x
    x = 28,915,074,507.57/246,638.85
  6. Step 6: Final answer
    x = 117,236.50

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1.5x scale

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.