Home / 290,928,784.78-401,490,234.66-158,778,257.32

Finding the Fourth Proportional to 290,928,784.78, 401,490,234.66 and 158,778,257.32

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Solution

The fourth proportional to 290,928,784.78, 401,490,234.66 and 158,778,257.32 is: 219,118,640.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928,784.78 : 401,490,234.66 = 158,778,257.32 : x
  2. Step 2: Convert to fraction form
    290,928,784.78/401,490,234.66 = 158,778,257.32/x
  3. Step 3: Cross multiply
    290,928,784.78x = 401,490,234.66 × 158,778,257.32
  4. Step 4: Simplify right side
    290,928,784.78x = 63,747,919,790,312,664
  5. Step 5: Solve for x
    x = 63,747,919,790,312,664/290,928,784.78
  6. Step 6: Final answer
    x = 219,118,640.46

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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.