Home / 217,485,643.72-326,127,314.94-79,214,989

Finding the Fourth Proportional to 217,485,643.72, 326,127,314.94 and 79,214,989

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Solution

The fourth proportional to 217,485,643.72, 326,127,314.94 and 79,214,989 is: 118,785,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,485,643.72 : 326,127,314.94 = 79,214,989 : x
  2. Step 2: Convert to fraction form
    217,485,643.72/326,127,314.94 = 79,214,989/x
  3. Step 3: Cross multiply
    217,485,643.72x = 326,127,314.94 × 79,214,989
  4. Step 4: Simplify right side
    217,485,643.72x = 25,834,171,665,571,636
  5. Step 5: Solve for x
    x = 25,834,171,665,571,636/217,485,643.72
  6. Step 6: Final answer
    x = 118,785,641.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.