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Finding the Fourth Proportional to 401,248.87, 553,730.30 and 219,949.20

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Solution

The fourth proportional to 401,248.87, 553,730.30 and 219,949.20 is: 303,533.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,248.87 : 553,730.30 = 219,949.20 : x
  2. Step 2: Convert to fraction form
    401,248.87/553,730.30 = 219,949.20/x
  3. Step 3: Cross multiply
    401,248.87x = 553,730.30 × 219,949.20
  4. Step 4: Simplify right side
    401,248.87x = 121,792,536,500.76
  5. Step 5: Solve for x
    x = 121,792,536,500.76/401,248.87
  6. Step 6: Final answer
    x = 303,533.66

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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.