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Finding the Fourth Proportional to 400,589.51, 552,813.48 and 219,300.87

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Solution

The fourth proportional to 400,589.51, 552,813.48 and 219,300.87 is: 302,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,589.51 : 552,813.48 = 219,300.87 : x
  2. Step 2: Convert to fraction form
    400,589.51/552,813.48 = 219,300.87/x
  3. Step 3: Cross multiply
    400,589.51x = 552,813.48 × 219,300.87
  4. Step 4: Simplify right side
    400,589.51x = 121,232,477,111.73
  5. Step 5: Solve for x
    x = 121,232,477,111.73/400,589.51
  6. Step 6: Final answer
    x = 302,635.18

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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.