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Finding the Fourth Proportional to 397,880.04, 549,072.90 and 216,602.04

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Solution

The fourth proportional to 397,880.04, 549,072.90 and 216,602.04 is: 298,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,880.04 : 549,072.90 = 216,602.04 : x
  2. Step 2: Convert to fraction form
    397,880.04/549,072.90 = 216,602.04/x
  3. Step 3: Cross multiply
    397,880.04x = 549,072.90 × 216,602.04
  4. Step 4: Simplify right side
    397,880.04x = 118,930,310,248.72
  5. Step 5: Solve for x
    x = 118,930,310,248.72/397,880.04
  6. Step 6: Final answer
    x = 298,909.97

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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.