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Finding the Fourth Proportional to 306,215.85, 422,601.54 and 183,712.82

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Solution

The fourth proportional to 306,215.85, 422,601.54 and 183,712.82 is: 253,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,215.85 : 422,601.54 = 183,712.82 : x
  2. Step 2: Convert to fraction form
    306,215.85/422,601.54 = 183,712.82/x
  3. Step 3: Cross multiply
    306,215.85x = 422,601.54 × 183,712.82
  4. Step 4: Simplify right side
    306,215.85x = 77,637,320,649.74
  5. Step 5: Solve for x
    x = 77,637,320,649.74/306,215.85
  6. Step 6: Final answer
    x = 253,537.89

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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.