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Finding the Fourth Proportional to 403,459.62, 605,280.15 and 123,005.22

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Solution

The fourth proportional to 403,459.62, 605,280.15 and 123,005.22 is: 184,535.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,459.62 : 605,280.15 = 123,005.22 : x
  2. Step 2: Convert to fraction form
    403,459.62/605,280.15 = 123,005.22/x
  3. Step 3: Cross multiply
    403,459.62x = 605,280.15 × 123,005.22
  4. Step 4: Simplify right side
    403,459.62x = 74,452,618,012.38
  5. Step 5: Solve for x
    x = 74,452,618,012.38/403,459.62
  6. Step 6: Final answer
    x = 184,535.49

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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.