Home / 400,972.12-553,341.51-219,690.91

Finding the Fourth Proportional to 400,972.12, 553,341.51 and 219,690.91

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Solution

The fourth proportional to 400,972.12, 553,341.51 and 219,690.91 is: 303,173.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,972.12 : 553,341.51 = 219,690.91 : x
  2. Step 2: Convert to fraction form
    400,972.12/553,341.51 = 219,690.91/x
  3. Step 3: Cross multiply
    400,972.12x = 553,341.51 × 219,690.91
  4. Step 4: Simplify right side
    400,972.12x = 121,564,100,564.35
  5. Step 5: Solve for x
    x = 121,564,100,564.35/400,972.12
  6. Step 6: Final answer
    x = 303,173.45

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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.