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Finding the Fourth Proportional to 378,315.04, 522,075.90 and 208,545.52

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Solution

The fourth proportional to 378,315.04, 522,075.90 and 208,545.52 is: 287,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,315.04 : 522,075.90 = 208,545.52 : x
  2. Step 2: Convert to fraction form
    378,315.04/522,075.90 = 208,545.52/x
  3. Step 3: Cross multiply
    378,315.04x = 522,075.90 × 208,545.52
  4. Step 4: Simplify right side
    378,315.04x = 108,876,590,044.97
  5. Step 5: Solve for x
    x = 108,876,590,044.97/378,315.04
  6. Step 6: Final answer
    x = 287,793.45

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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.