Home / 287,728,512.20-431,592,768.30-105,952,070.60

Finding the Fourth Proportional to 287,728,512.20, 431,592,768.30 and 105,952,070.60

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Solution

The fourth proportional to 287,728,512.20, 431,592,768.30 and 105,952,070.60 is: 158,928,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,728,512.20 : 431,592,768.30 = 105,952,070.60 : x
  2. Step 2: Convert to fraction form
    287,728,512.20/431,592,768.30 = 105,952,070.60/x
  3. Step 3: Cross multiply
    287,728,512.20x = 431,592,768.30 × 105,952,070.60
  4. Step 4: Simplify right side
    287,728,512.20x = 45,728,147,457,371,040
  5. Step 5: Solve for x
    x = 45,728,147,457,371,040/287,728,512.20
  6. Step 6: Final answer
    x = 158,928,105.90

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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.