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Finding the Fourth Proportional to 400,840.91, 553,160.58 and 219,555.87

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Solution

The fourth proportional to 400,840.91, 553,160.58 and 219,555.87 is: 302,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,840.91 : 553,160.58 = 219,555.87 : x
  2. Step 2: Convert to fraction form
    400,840.91/553,160.58 = 219,555.87/x
  3. Step 3: Cross multiply
    400,840.91x = 553,160.58 × 219,555.87
  4. Step 4: Simplify right side
    400,840.91x = 121,449,652,391.61
  5. Step 5: Solve for x
    x = 121,449,652,391.61/400,840.91
  6. Step 6: Final answer
    x = 302,987.17

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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.