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Finding the Fourth Proportional to 227,551.78, 313,663.89 and 155,807.74

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Solution

The fourth proportional to 227,551.78, 313,663.89 and 155,807.74 is: 214,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,551.78 : 313,663.89 = 155,807.74 : x
  2. Step 2: Convert to fraction form
    227,551.78/313,663.89 = 155,807.74/x
  3. Step 3: Cross multiply
    227,551.78x = 313,663.89 × 155,807.74
  4. Step 4: Simplify right side
    227,551.78x = 48,871,261,820.51
  5. Step 5: Solve for x
    x = 48,871,261,820.51/227,551.78
  6. Step 6: Final answer
    x = 214,769.85

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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.