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Finding the Fourth Proportional to 400,435.50, 552,600.90 and 219,147.51

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Solution

The fourth proportional to 400,435.50, 552,600.90 and 219,147.51 is: 302,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,435.50 : 552,600.90 = 219,147.51 : x
  2. Step 2: Convert to fraction form
    400,435.50/552,600.90 = 219,147.51/x
  3. Step 3: Cross multiply
    400,435.50x = 552,600.90 × 219,147.51
  4. Step 4: Simplify right side
    400,435.50x = 121,101,111,258.76
  5. Step 5: Solve for x
    x = 121,101,111,258.76/400,435.50
  6. Step 6: Final answer
    x = 302,423.51

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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.