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Finding the Fourth Proportional to 388,626.45, 536,305.62 and 225,314.70

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Solution

The fourth proportional to 388,626.45, 536,305.62 and 225,314.70 is: 310,934.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,626.45 : 536,305.62 = 225,314.70 : x
  2. Step 2: Convert to fraction form
    388,626.45/536,305.62 = 225,314.70/x
  3. Step 3: Cross multiply
    388,626.45x = 536,305.62 × 225,314.70
  4. Step 4: Simplify right side
    388,626.45x = 120,837,539,878.61
  5. Step 5: Solve for x
    x = 120,837,539,878.61/388,626.45
  6. Step 6: Final answer
    x = 310,934.93

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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.