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Finding the Fourth Proportional to 306,414.72, 422,679.66 and 183,875.40

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Solution

The fourth proportional to 306,414.72, 422,679.66 and 183,875.40 is: 253,644.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,414.72 : 422,679.66 = 183,875.40 : x
  2. Step 2: Convert to fraction form
    306,414.72/422,679.66 = 183,875.40/x
  3. Step 3: Cross multiply
    306,414.72x = 422,679.66 × 183,875.40
  4. Step 4: Simplify right side
    306,414.72x = 77,720,391,554.36
  5. Step 5: Solve for x
    x = 77,720,391,554.36/306,414.72
  6. Step 6: Final answer
    x = 253,644.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.