Home / 312,745,089.69-431,588,277.14-173,515,519.31

Finding the Fourth Proportional to 312,745,089.69, 431,588,277.14 and 173,515,519.31

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Solution

The fourth proportional to 312,745,089.69, 431,588,277.14 and 173,515,519.31 is: 239,451,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,745,089.69 : 431,588,277.14 = 173,515,519.31 : x
  2. Step 2: Convert to fraction form
    312,745,089.69/431,588,277.14 = 173,515,519.31/x
  3. Step 3: Cross multiply
    312,745,089.69x = 431,588,277.14 × 173,515,519.31
  4. Step 4: Simplify right side
    312,745,089.69x = 74,887,264,033,029,792
  5. Step 5: Solve for x
    x = 74,887,264,033,029,792/312,745,089.69
  6. Step 6: Final answer
    x = 239,451,446.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.