Home / 638,005,091.20-957,007,636.80-153,330,899.20

Finding the Fourth Proportional to 638,005,091.20, 957,007,636.80 and 153,330,899.20

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Solution

The fourth proportional to 638,005,091.20, 957,007,636.80 and 153,330,899.20 is: 229,996,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,005,091.20 : 957,007,636.80 = 153,330,899.20 : x
  2. Step 2: Convert to fraction form
    638,005,091.20/957,007,636.80 = 153,330,899.20/x
  3. Step 3: Cross multiply
    638,005,091.20x = 957,007,636.80 × 153,330,899.20
  4. Step 4: Simplify right side
    638,005,091.20x = 146,738,841,491,810,976
  5. Step 5: Solve for x
    x = 146,738,841,491,810,976/638,005,091.20
  6. Step 6: Final answer
    x = 229,996,348.80

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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.