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Finding the Fourth Proportional to 212,818.79, 293,692.19 and 117,328.89

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Solution

The fourth proportional to 212,818.79, 293,692.19 and 117,328.89 is: 161,915.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,818.79 : 293,692.19 = 117,328.89 : x
  2. Step 2: Convert to fraction form
    212,818.79/293,692.19 = 117,328.89/x
  3. Step 3: Cross multiply
    212,818.79x = 293,692.19 × 117,328.89
  4. Step 4: Simplify right side
    212,818.79x = 34,458,578,067.72
  5. Step 5: Solve for x
    x = 34,458,578,067.72/212,818.79
  6. Step 6: Final answer
    x = 161,915.12

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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.