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Finding the Fourth Proportional to 403,087.76, 556,244.43 and 219,327.09

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Solution

The fourth proportional to 403,087.76, 556,244.43 and 219,327.09 is: 302,662.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,087.76 : 556,244.43 = 219,327.09 : x
  2. Step 2: Convert to fraction form
    403,087.76/556,244.43 = 219,327.09/x
  3. Step 3: Cross multiply
    403,087.76x = 556,244.43 × 219,327.09
  4. Step 4: Simplify right side
    403,087.76x = 121,999,472,160.61
  5. Step 5: Solve for x
    x = 121,999,472,160.61/403,087.76
  6. Step 6: Final answer
    x = 302,662.31

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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.