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Finding the Fourth Proportional to 400,864.87, 553,193.63 and 219,583.32

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Solution

The fourth proportional to 400,864.87, 553,193.63 and 219,583.32 is: 303,025.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,864.87 : 553,193.63 = 219,583.32 : x
  2. Step 2: Convert to fraction form
    400,864.87/553,193.63 = 219,583.32/x
  3. Step 3: Cross multiply
    400,864.87x = 553,193.63 × 219,583.32
  4. Step 4: Simplify right side
    400,864.87x = 121,472,095,876.17
  5. Step 5: Solve for x
    x = 121,472,095,876.17/400,864.87
  6. Step 6: Final answer
    x = 303,025.05

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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.