Home / 290,121,511.60-400,363,930.47-157,960,992.25

Finding the Fourth Proportional to 290,121,511.60, 400,363,930.47 and 157,960,992.25

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Solution

The fourth proportional to 290,121,511.60, 400,363,930.47 and 157,960,992.25 is: 217,984,124.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,121,511.60 : 400,363,930.47 = 157,960,992.25 : x
  2. Step 2: Convert to fraction form
    290,121,511.60/400,363,930.47 = 157,960,992.25/x
  3. Step 3: Cross multiply
    290,121,511.60x = 400,363,930.47 × 157,960,992.25
  4. Step 4: Simplify right side
    290,121,511.60x = 63,241,883,718,151,216
  5. Step 5: Solve for x
    x = 63,241,883,718,151,216/290,121,511.60
  6. Step 6: Final answer
    x = 217,984,124.55

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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.