Home / 215,091.79-322,637.64-102,430.42

Finding the Fourth Proportional to 215,091.79, 322,637.64 and 102,430.42

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Solution

The fourth proportional to 215,091.79, 322,637.64 and 102,430.42 is: 153,645.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,091.79 : 322,637.64 = 102,430.42 : x
  2. Step 2: Convert to fraction form
    215,091.79/322,637.64 = 102,430.42/x
  3. Step 3: Cross multiply
    215,091.79x = 322,637.64 × 102,430.42
  4. Step 4: Simplify right side
    215,091.79x = 33,047,908,973.01
  5. Step 5: Solve for x
    x = 33,047,908,973.01/215,091.79
  6. Step 6: Final answer
    x = 153,645.61

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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.