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Finding the Fourth Proportional to 403,100.43, 556,261.79 and 219,339.71

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Solution

The fourth proportional to 403,100.43, 556,261.79 and 219,339.71 is: 302,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,100.43 : 556,261.79 = 219,339.71 : x
  2. Step 2: Convert to fraction form
    403,100.43/556,261.79 = 219,339.71/x
  3. Step 3: Cross multiply
    403,100.43x = 556,261.79 × 219,339.71
  4. Step 4: Simplify right side
    403,100.43x = 122,010,301,656.52
  5. Step 5: Solve for x
    x = 122,010,301,656.52/403,100.43
  6. Step 6: Final answer
    x = 302,679.66

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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.