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Finding the Fourth Proportional to 228,806.64, 315,784.08 and 133,343.28

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Solution

The fourth proportional to 228,806.64, 315,784.08 and 133,343.28 is: 184,031.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,806.64 : 315,784.08 = 133,343.28 : x
  2. Step 2: Convert to fraction form
    228,806.64/315,784.08 = 133,343.28/x
  3. Step 3: Cross multiply
    228,806.64x = 315,784.08 × 133,343.28
  4. Step 4: Simplify right side
    228,806.64x = 42,107,684,998.98
  5. Step 5: Solve for x
    x = 42,107,684,998.98/228,806.64
  6. Step 6: Final answer
    x = 184,031.74

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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.