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Finding the Fourth Proportional to 398,467.87, 549,885.86 and 226,386.13

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Solution

The fourth proportional to 398,467.87, 549,885.86 and 226,386.13 is: 312,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,467.87 : 549,885.86 = 226,386.13 : x
  2. Step 2: Convert to fraction form
    398,467.87/549,885.86 = 226,386.13/x
  3. Step 3: Cross multiply
    398,467.87x = 549,885.86 × 226,386.13
  4. Step 4: Simplify right side
    398,467.87x = 124,486,531,787.12
  5. Step 5: Solve for x
    x = 124,486,531,787.12/398,467.87
  6. Step 6: Final answer
    x = 312,412.98

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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.