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Finding the Fourth Proportional to 400,387.08, 600,580.95 and 100,865.12

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Solution

The fourth proportional to 400,387.08, 600,580.95 and 100,865.12 is: 151,297.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,387.08 : 600,580.95 = 100,865.12 : x
  2. Step 2: Convert to fraction form
    400,387.08/600,580.95 = 100,865.12/x
  3. Step 3: Cross multiply
    400,387.08x = 600,580.95 × 100,865.12
  4. Step 4: Simplify right side
    400,387.08x = 60,577,672,128.77
  5. Step 5: Solve for x
    x = 60,577,672,128.77/400,387.08
  6. Step 6: Final answer
    x = 151,297.77

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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.