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Finding the Fourth Proportional to 400,599.40, 600,860.16 and 105,111.40

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Solution

The fourth proportional to 400,599.40, 600,860.16 and 105,111.40 is: 157,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,599.40 : 600,860.16 = 105,111.40 : x
  2. Step 2: Convert to fraction form
    400,599.40/600,860.16 = 105,111.40/x
  3. Step 3: Cross multiply
    400,599.40x = 600,860.16 × 105,111.40
  4. Step 4: Simplify right side
    400,599.40x = 63,157,252,621.82
  5. Step 5: Solve for x
    x = 63,157,252,621.82/400,599.40
  6. Step 6: Final answer
    x = 157,656.88

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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.