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Finding the Fourth Proportional to 403,421.40, 604,872.90 and 166,858.20

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Solution

The fourth proportional to 403,421.40, 604,872.90 and 166,858.20 is: 250,180.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,421.40 : 604,872.90 = 166,858.20 : x
  2. Step 2: Convert to fraction form
    403,421.40/604,872.90 = 166,858.20/x
  3. Step 3: Cross multiply
    403,421.40x = 604,872.90 × 166,858.20
  4. Step 4: Simplify right side
    403,421.40x = 100,928,003,322.78
  5. Step 5: Solve for x
    x = 100,928,003,322.78/403,421.40
  6. Step 6: Final answer
    x = 250,180.09

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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.