Home / 290,928,768.28-401,490,211.89-158,778,240.82

Finding the Fourth Proportional to 290,928,768.28, 401,490,211.89 and 158,778,240.82

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Solution

The fourth proportional to 290,928,768.28, 401,490,211.89 and 158,778,240.82 is: 219,118,617.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928,768.28 : 401,490,211.89 = 158,778,240.82 : x
  2. Step 2: Convert to fraction form
    290,928,768.28/401,490,211.89 = 158,778,240.82/x
  3. Step 3: Cross multiply
    290,928,768.28x = 401,490,211.89 × 158,778,240.82
  4. Step 4: Simplify right side
    290,928,768.28x = 63,747,909,550,343,240
  5. Step 5: Solve for x
    x = 63,747,909,550,343,240/290,928,768.28
  6. Step 6: Final answer
    x = 219,118,617.69

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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.