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Finding the Fourth Proportional to 397,498.60, 548,557.10 and 216,220.22

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Solution

The fourth proportional to 397,498.60, 548,557.10 and 216,220.22 is: 298,388.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,498.60 : 548,557.10 = 216,220.22 : x
  2. Step 2: Convert to fraction form
    397,498.60/548,557.10 = 216,220.22/x
  3. Step 3: Cross multiply
    397,498.60x = 548,557.10 × 216,220.22
  4. Step 4: Simplify right side
    397,498.60x = 118,609,136,844.56
  5. Step 5: Solve for x
    x = 118,609,136,844.56/397,498.60
  6. Step 6: Final answer
    x = 298,388.82

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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.