Home / 217,485,642.72-326,127,313.44-79,214,988

Finding the Fourth Proportional to 217,485,642.72, 326,127,313.44 and 79,214,988

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Solution

The fourth proportional to 217,485,642.72, 326,127,313.44 and 79,214,988 is: 118,785,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,485,642.72 : 326,127,313.44 = 79,214,988 : x
  2. Step 2: Convert to fraction form
    217,485,642.72/326,127,313.44 = 79,214,988/x
  3. Step 3: Cross multiply
    217,485,642.72x = 326,127,313.44 × 79,214,988
  4. Step 4: Simplify right side
    217,485,642.72x = 25,834,171,220,621,840
  5. Step 5: Solve for x
    x = 25,834,171,220,621,840/217,485,642.72
  6. Step 6: Final answer
    x = 118,785,639.81

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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.