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Finding the Fourth Proportional to 245,999.49, 368,752.59 and 85,951.20

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Solution

The fourth proportional to 245,999.49, 368,752.59 and 85,951.20 is: 128,840.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,999.49 : 368,752.59 = 85,951.20 : x
  2. Step 2: Convert to fraction form
    245,999.49/368,752.59 = 85,951.20/x
  3. Step 3: Cross multiply
    245,999.49x = 368,752.59 × 85,951.20
  4. Step 4: Simplify right side
    245,999.49x = 31,694,727,613.61
  5. Step 5: Solve for x
    x = 31,694,727,613.61/245,999.49
  6. Step 6: Final answer
    x = 128,840.62

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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.