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Finding the Fourth Proportional to 407,427.78, 562,241.88 and 226,129.08

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Solution

The fourth proportional to 407,427.78, 562,241.88 and 226,129.08 is: 312,053.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,427.78 : 562,241.88 = 226,129.08 : x
  2. Step 2: Convert to fraction form
    407,427.78/562,241.88 = 226,129.08/x
  3. Step 3: Cross multiply
    407,427.78x = 562,241.88 × 226,129.08
  4. Step 4: Simplify right side
    407,427.78x = 127,139,239,061.87
  5. Step 5: Solve for x
    x = 127,139,239,061.87/407,427.78
  6. Step 6: Final answer
    x = 312,053.44

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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.