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Finding the Fourth Proportional to 561,568.51, 774,953.04 and 306,921.52

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Solution

The fourth proportional to 561,568.51, 774,953.04 and 306,921.52 is: 423,545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,568.51 : 774,953.04 = 306,921.52 : x
  2. Step 2: Convert to fraction form
    561,568.51/774,953.04 = 306,921.52/x
  3. Step 3: Cross multiply
    561,568.51x = 774,953.04 × 306,921.52
  4. Step 4: Simplify right side
    561,568.51x = 237,849,764,965.42
  5. Step 5: Solve for x
    x = 237,849,764,965.42/561,568.51
  6. Step 6: Final answer
    x = 423,545.41

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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.