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Finding the Fourth Proportional to 403,087.80, 556,244.47 and 219,327.12

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Solution

The fourth proportional to 403,087.80, 556,244.47 and 219,327.12 is: 302,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,087.80 : 556,244.47 = 219,327.12 : x
  2. Step 2: Convert to fraction form
    403,087.80/556,244.47 = 219,327.12/x
  3. Step 3: Cross multiply
    403,087.80x = 556,244.47 × 219,327.12
  4. Step 4: Simplify right side
    403,087.80x = 121,999,497,621.03
  5. Step 5: Solve for x
    x = 121,999,497,621.03/403,087.80
  6. Step 6: Final answer
    x = 302,662.34

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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.