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Finding the Fourth Proportional to 401,113.72, 553,544.04 and 219,813.58

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Solution

The fourth proportional to 401,113.72, 553,544.04 and 219,813.58 is: 303,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,113.72 : 553,544.04 = 219,813.58 : x
  2. Step 2: Convert to fraction form
    401,113.72/553,544.04 = 219,813.58/x
  3. Step 3: Cross multiply
    401,113.72x = 553,544.04 × 219,813.58
  4. Step 4: Simplify right side
    401,113.72x = 121,676,497,120.06
  5. Step 5: Solve for x
    x = 121,676,497,120.06/401,113.72
  6. Step 6: Final answer
    x = 303,346.63

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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.