Home / 215,918.80-323,878.20-163,430.80

Finding the Fourth Proportional to 215,918.80, 323,878.20 and 163,430.80

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Solution

The fourth proportional to 215,918.80, 323,878.20 and 163,430.80 is: 245,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,918.80 : 323,878.20 = 163,430.80 : x
  2. Step 2: Convert to fraction form
    215,918.80/323,878.20 = 163,430.80/x
  3. Step 3: Cross multiply
    215,918.80x = 323,878.20 × 163,430.80
  4. Step 4: Simplify right side
    215,918.80x = 52,931,673,328.56
  5. Step 5: Solve for x
    x = 52,931,673,328.56/215,918.80
  6. Step 6: Final answer
    x = 245,146.20

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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.