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Finding the Fourth Proportional to 400,392.72, 552,518.08 and 219,068.52

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Solution

The fourth proportional to 400,392.72, 552,518.08 and 219,068.52 is: 302,301.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,392.72 : 552,518.08 = 219,068.52 : x
  2. Step 2: Convert to fraction form
    400,392.72/552,518.08 = 219,068.52/x
  3. Step 3: Cross multiply
    400,392.72x = 552,518.08 × 219,068.52
  4. Step 4: Simplify right side
    400,392.72x = 121,039,318,058.84
  5. Step 5: Solve for x
    x = 121,039,318,058.84/400,392.72
  6. Step 6: Final answer
    x = 302,301.50

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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.