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Finding the Fourth Proportional to 351,656.72, 527,485.08 and 85,415.44

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Solution

The fourth proportional to 351,656.72, 527,485.08 and 85,415.44 is: 128,123.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,656.72 : 527,485.08 = 85,415.44 : x
  2. Step 2: Convert to fraction form
    351,656.72/527,485.08 = 85,415.44/x
  3. Step 3: Cross multiply
    351,656.72x = 527,485.08 × 85,415.44
  4. Step 4: Simplify right side
    351,656.72x = 45,055,368,228.25
  5. Step 5: Solve for x
    x = 45,055,368,228.25/351,656.72
  6. Step 6: Final answer
    x = 128,123.16

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1.5x scale

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.