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Finding the Fourth Proportional to 219,150.16, 302,420.28 and 123,655.48

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Solution

The fourth proportional to 219,150.16, 302,420.28 and 123,655.48 is: 170,640.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,150.16 : 302,420.28 = 123,655.48 : x
  2. Step 2: Convert to fraction form
    219,150.16/302,420.28 = 123,655.48/x
  3. Step 3: Cross multiply
    219,150.16x = 302,420.28 × 123,655.48
  4. Step 4: Simplify right side
    219,150.16x = 37,395,924,885.13
  5. Step 5: Solve for x
    x = 37,395,924,885.13/219,150.16
  6. Step 6: Final answer
    x = 170,640.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.