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Finding the Fourth Proportional to 398,730.24, 599,129.28 and 299,822.40

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Solution

The fourth proportional to 398,730.24, 599,129.28 and 299,822.40 is: 450,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,730.24 : 599,129.28 = 299,822.40 : x
  2. Step 2: Convert to fraction form
    398,730.24/599,129.28 = 299,822.40/x
  3. Step 3: Cross multiply
    398,730.24x = 599,129.28 × 299,822.40
  4. Step 4: Simplify right side
    398,730.24x = 179,632,378,639.87
  5. Step 5: Solve for x
    x = 179,632,378,639.87/398,730.24
  6. Step 6: Final answer
    x = 450,511.05

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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.