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Finding the Fourth Proportional to 613,772.64, 921,144.94 and 259,031.52

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Solution

The fourth proportional to 613,772.64, 921,144.94 and 259,031.52 is: 388,752.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,772.64 : 921,144.94 = 259,031.52 : x
  2. Step 2: Convert to fraction form
    613,772.64/921,144.94 = 259,031.52/x
  3. Step 3: Cross multiply
    613,772.64x = 921,144.94 × 259,031.52
  4. Step 4: Simplify right side
    613,772.64x = 238,605,573,948.51
  5. Step 5: Solve for x
    x = 238,605,573,948.51/613,772.64
  6. Step 6: Final answer
    x = 388,752.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.