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Finding the Fourth Proportional to 200,074.20, 299,455.20 and 155,459.40

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Solution

The fourth proportional to 200,074.20, 299,455.20 and 155,459.40 is: 232,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,074.20 : 299,455.20 = 155,459.40 : x
  2. Step 2: Convert to fraction form
    200,074.20/299,455.20 = 155,459.40/x
  3. Step 3: Cross multiply
    200,074.20x = 299,455.20 × 155,459.40
  4. Step 4: Simplify right side
    200,074.20x = 46,553,125,718.88
  5. Step 5: Solve for x
    x = 46,553,125,718.88/200,074.20
  6. Step 6: Final answer
    x = 232,679.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.