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Finding the Fourth Proportional to 352,715.56, 486,690.60 and 216,705.76

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Solution

The fourth proportional to 352,715.56, 486,690.60 and 216,705.76 is: 299,019.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,715.56 : 486,690.60 = 216,705.76 : x
  2. Step 2: Convert to fraction form
    352,715.56/486,690.60 = 216,705.76/x
  3. Step 3: Cross multiply
    352,715.56x = 486,690.60 × 216,705.76
  4. Step 4: Simplify right side
    352,715.56x = 105,468,656,357.86
  5. Step 5: Solve for x
    x = 105,468,656,357.86/352,715.56
  6. Step 6: Final answer
    x = 299,019.01

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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.