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Finding the Fourth Proportional to 400,904.67, 553,224.69 and 219,580.50

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Solution

The fourth proportional to 400,904.67, 553,224.69 and 219,580.50 is: 303,008.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,904.67 : 553,224.69 = 219,580.50 : x
  2. Step 2: Convert to fraction form
    400,904.67/553,224.69 = 219,580.50/x
  3. Step 3: Cross multiply
    400,904.67x = 553,224.69 × 219,580.50
  4. Step 4: Simplify right side
    400,904.67x = 121,477,354,042.55
  5. Step 5: Solve for x
    x = 121,477,354,042.55/400,904.67
  6. Step 6: Final answer
    x = 303,008.08

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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.