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Finding the Fourth Proportional to 342,906.40, 514,359.60 and 216,935.20

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Solution

The fourth proportional to 342,906.40, 514,359.60 and 216,935.20 is: 325,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,906.40 : 514,359.60 = 216,935.20 : x
  2. Step 2: Convert to fraction form
    342,906.40/514,359.60 = 216,935.20/x
  3. Step 3: Cross multiply
    342,906.40x = 514,359.60 × 216,935.20
  4. Step 4: Simplify right side
    342,906.40x = 111,582,702,697.92
  5. Step 5: Solve for x
    x = 111,582,702,697.92/342,906.40
  6. Step 6: Final answer
    x = 325,402.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.