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Finding the Fourth Proportional to 531,920.77, 734,049.92 and 290,203.51

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Solution

The fourth proportional to 531,920.77, 734,049.92 and 290,203.51 is: 400,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,920.77 : 734,049.92 = 290,203.51 : x
  2. Step 2: Convert to fraction form
    531,920.77/734,049.92 = 290,203.51/x
  3. Step 3: Cross multiply
    531,920.77x = 734,049.92 × 290,203.51
  4. Step 4: Simplify right side
    531,920.77x = 213,023,862,749.75
  5. Step 5: Solve for x
    x = 213,023,862,749.75/531,920.77
  6. Step 6: Final answer
    x = 400,480.44

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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.