Home / 219,021.40-328,661.70-159,707.80

Finding the Fourth Proportional to 219,021.40, 328,661.70 and 159,707.80

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Solution

The fourth proportional to 219,021.40, 328,661.70 and 159,707.80 is: 239,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,021.40 : 328,661.70 = 159,707.80 : x
  2. Step 2: Convert to fraction form
    219,021.40/328,661.70 = 159,707.80/x
  3. Step 3: Cross multiply
    219,021.40x = 328,661.70 × 159,707.80
  4. Step 4: Simplify right side
    219,021.40x = 52,489,837,051.26
  5. Step 5: Solve for x
    x = 52,489,837,051.26/219,021.40
  6. Step 6: Final answer
    x = 239,656.20

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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.