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Finding the Fourth Proportional to 397,360.16, 548,359.86 and 216,070.78

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Solution

The fourth proportional to 397,360.16, 548,359.86 and 216,070.78 is: 298,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,360.16 : 548,359.86 = 216,070.78 : x
  2. Step 2: Convert to fraction form
    397,360.16/548,359.86 = 216,070.78/x
  3. Step 3: Cross multiply
    397,360.16x = 548,359.86 × 216,070.78
  4. Step 4: Simplify right side
    397,360.16x = 118,484,542,670.89
  5. Step 5: Solve for x
    x = 118,484,542,670.89/397,360.16
  6. Step 6: Final answer
    x = 298,179.22

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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.