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Finding the Fourth Proportional to 388,545.20, 536,235 and 245,297.84

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Solution

The fourth proportional to 388,545.20, 536,235 and 245,297.84 is: 338,537.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,545.20 : 536,235 = 245,297.84 : x
  2. Step 2: Convert to fraction form
    388,545.20/536,235 = 245,297.84/x
  3. Step 3: Cross multiply
    388,545.20x = 536,235 × 245,297.84
  4. Step 4: Simplify right side
    388,545.20x = 131,537,287,232.40
  5. Step 5: Solve for x
    x = 131,537,287,232.40/388,545.20
  6. Step 6: Final answer
    x = 338,537.93

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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.