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Finding the Fourth Proportional to 380,637.48, 570,965.52 and 127,921.68

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Solution

The fourth proportional to 380,637.48, 570,965.52 and 127,921.68 is: 191,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,637.48 : 570,965.52 = 127,921.68 : x
  2. Step 2: Convert to fraction form
    380,637.48/570,965.52 = 127,921.68/x
  3. Step 3: Cross multiply
    380,637.48x = 570,965.52 × 127,921.68
  4. Step 4: Simplify right side
    380,637.48x = 73,038,868,540.47
  5. Step 5: Solve for x
    x = 73,038,868,540.47/380,637.48
  6. Step 6: Final answer
    x = 191,885.65

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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.