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Finding the Fourth Proportional to 228,299.34, 315,031.63 and 154,561.77

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Solution

The fourth proportional to 228,299.34, 315,031.63 and 154,561.77 is: 213,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,299.34 : 315,031.63 = 154,561.77 : x
  2. Step 2: Convert to fraction form
    228,299.34/315,031.63 = 154,561.77/x
  3. Step 3: Cross multiply
    228,299.34x = 315,031.63 × 154,561.77
  4. Step 4: Simplify right side
    228,299.34x = 48,691,845,254.75
  5. Step 5: Solve for x
    x = 48,691,845,254.75/228,299.34
  6. Step 6: Final answer
    x = 213,280.71

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1.5x scale

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.