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Finding the Fourth Proportional to 352,533.12, 486,572.49 and 216,638.40

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Solution

The fourth proportional to 352,533.12, 486,572.49 and 216,638.40 is: 299,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,533.12 : 486,572.49 = 216,638.40 : x
  2. Step 2: Convert to fraction form
    352,533.12/486,572.49 = 216,638.40/x
  3. Step 3: Cross multiply
    352,533.12x = 486,572.49 × 216,638.40
  4. Step 4: Simplify right side
    352,533.12x = 105,410,285,717.62
  5. Step 5: Solve for x
    x = 105,410,285,717.62/352,533.12
  6. Step 6: Final answer
    x = 299,008.18

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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.