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Finding the Fourth Proportional to 397,878.04, 549,070.14 and 216,600.04

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Solution

The fourth proportional to 397,878.04, 549,070.14 and 216,600.04 is: 298,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,878.04 : 549,070.14 = 216,600.04 : x
  2. Step 2: Convert to fraction form
    397,878.04/549,070.14 = 216,600.04/x
  3. Step 3: Cross multiply
    397,878.04x = 549,070.14 × 216,600.04
  4. Step 4: Simplify right side
    397,878.04x = 118,928,614,286.81
  5. Step 5: Solve for x
    x = 118,928,614,286.81/397,878.04
  6. Step 6: Final answer
    x = 298,907.21

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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.