Home / 215,784.57-323,663.28-66,012.98

Finding the Fourth Proportional to 215,784.57, 323,663.28 and 66,012.98

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Solution

The fourth proportional to 215,784.57, 323,663.28 and 66,012.98 is: 99,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,784.57 : 323,663.28 = 66,012.98 : x
  2. Step 2: Convert to fraction form
    215,784.57/323,663.28 = 66,012.98/x
  3. Step 3: Cross multiply
    215,784.57x = 323,663.28 × 66,012.98
  4. Step 4: Simplify right side
    215,784.57x = 21,365,975,763.51
  5. Step 5: Solve for x
    x = 21,365,975,763.51/215,784.57
  6. Step 6: Final answer
    x = 99,015.31

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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.