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Finding the Fourth Proportional to 288,410.90, 432,616.35 and 267,415.70

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Solution

The fourth proportional to 288,410.90, 432,616.35 and 267,415.70 is: 401,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,410.90 : 432,616.35 = 267,415.70 : x
  2. Step 2: Convert to fraction form
    288,410.90/432,616.35 = 267,415.70/x
  3. Step 3: Cross multiply
    288,410.90x = 432,616.35 × 267,415.70
  4. Step 4: Simplify right side
    288,410.90x = 115,688,404,066.70
  5. Step 5: Solve for x
    x = 115,688,404,066.70/288,410.90
  6. Step 6: Final answer
    x = 401,123.55

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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.