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Finding the Fourth Proportional to 351,656.32, 527,484.49 and 85,415.04

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Solution

The fourth proportional to 351,656.32, 527,484.49 and 85,415.04 is: 128,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,656.32 : 527,484.49 = 85,415.04 : x
  2. Step 2: Convert to fraction form
    351,656.32/527,484.49 = 85,415.04/x
  3. Step 3: Cross multiply
    351,656.32x = 527,484.49 × 85,415.04
  4. Step 4: Simplify right side
    351,656.32x = 45,055,111,111.10
  5. Step 5: Solve for x
    x = 45,055,111,111.10/351,656.32
  6. Step 6: Final answer
    x = 128,122.57

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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.