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Finding the Fourth Proportional to 400,646.36, 552,870.96 and 219,323.56

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Solution

The fourth proportional to 400,646.36, 552,870.96 and 219,323.56 is: 302,655.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,646.36 : 552,870.96 = 219,323.56 : x
  2. Step 2: Convert to fraction form
    400,646.36/552,870.96 = 219,323.56/x
  3. Step 3: Cross multiply
    400,646.36x = 552,870.96 × 219,323.56
  4. Step 4: Simplify right side
    400,646.36x = 121,257,627,167.82
  5. Step 5: Solve for x
    x = 121,257,627,167.82/400,646.36
  6. Step 6: Final answer
    x = 302,655.01

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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.