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Finding the Fourth Proportional to 397,325.28, 548,320.56 and 216,036.96

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Solution

The fourth proportional to 397,325.28, 548,320.56 and 216,036.96 is: 298,137.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,325.28 : 548,320.56 = 216,036.96 : x
  2. Step 2: Convert to fraction form
    397,325.28/548,320.56 = 216,036.96/x
  3. Step 3: Cross multiply
    397,325.28x = 548,320.56 × 216,036.96
  4. Step 4: Simplify right side
    397,325.28x = 118,457,506,887.90
  5. Step 5: Solve for x
    x = 118,457,506,887.90/397,325.28
  6. Step 6: Final answer
    x = 298,137.35

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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.