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Finding the Fourth Proportional to 220,588.77, 330,749.73 and 98,987.01

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Solution

The fourth proportional to 220,588.77, 330,749.73 and 98,987.01 is: 148,420.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,588.77 : 330,749.73 = 98,987.01 : x
  2. Step 2: Convert to fraction form
    220,588.77/330,749.73 = 98,987.01/x
  3. Step 3: Cross multiply
    220,588.77x = 330,749.73 × 98,987.01
  4. Step 4: Simplify right side
    220,588.77x = 32,739,927,451.16
  5. Step 5: Solve for x
    x = 32,739,927,451.16/220,588.77
  6. Step 6: Final answer
    x = 148,420.65

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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.