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Finding the Fourth Proportional to 287,302.62, 431,334.82 and 245,451.64

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Solution

The fourth proportional to 287,302.62, 431,334.82 and 245,451.64 is: 368,502.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,302.62 : 431,334.82 = 245,451.64 : x
  2. Step 2: Convert to fraction form
    287,302.62/431,334.82 = 245,451.64/x
  3. Step 3: Cross multiply
    287,302.62x = 431,334.82 × 245,451.64
  4. Step 4: Simplify right side
    287,302.62x = 105,871,838,958.11
  5. Step 5: Solve for x
    x = 105,871,838,958.11/287,302.62
  6. Step 6: Final answer
    x = 368,502.87

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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.