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Finding the Fourth Proportional to 397,704.04, 548,820.52 and 216,411.76

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Solution

The fourth proportional to 397,704.04, 548,820.52 and 216,411.76 is: 298,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,704.04 : 548,820.52 = 216,411.76 : x
  2. Step 2: Convert to fraction form
    397,704.04/548,820.52 = 216,411.76/x
  3. Step 3: Cross multiply
    397,704.04x = 548,820.52 × 216,411.76
  4. Step 4: Simplify right side
    397,704.04x = 118,771,214,657.32
  5. Step 5: Solve for x
    x = 118,771,214,657.32/397,704.04
  6. Step 6: Final answer
    x = 298,642.21

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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.