Home / 290,928,766.78-401,490,209.82-158,778,239.32

Finding the Fourth Proportional to 290,928,766.78, 401,490,209.82 and 158,778,239.32

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Solution

The fourth proportional to 290,928,766.78, 401,490,209.82 and 158,778,239.32 is: 219,118,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928,766.78 : 401,490,209.82 = 158,778,239.32 : x
  2. Step 2: Convert to fraction form
    290,928,766.78/401,490,209.82 = 158,778,239.32/x
  3. Step 3: Cross multiply
    290,928,766.78x = 401,490,209.82 × 158,778,239.32
  4. Step 4: Simplify right side
    290,928,766.78x = 63,747,908,619,436,968
  5. Step 5: Solve for x
    x = 63,747,908,619,436,968/290,928,766.78
  6. Step 6: Final answer
    x = 219,118,615.62

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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.