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Finding the Fourth Proportional to 838,476, 1,257,723.72 and 207,395.28

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Solution

The fourth proportional to 838,476, 1,257,723.72 and 207,395.28 is: 311,095.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,476 : 1,257,723.72 = 207,395.28 : x
  2. Step 2: Convert to fraction form
    838,476/1,257,723.72 = 207,395.28/x
  3. Step 3: Cross multiply
    838,476x = 1,257,723.72 × 207,395.28
  4. Step 4: Simplify right side
    838,476x = 260,845,963,072.04
  5. Step 5: Solve for x
    x = 260,845,963,072.04/838,476
  6. Step 6: Final answer
    x = 311,095.32

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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.