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Finding the Fourth Proportional to 388,894.84, 536,674.89 and 210,046.84

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Solution

The fourth proportional to 388,894.84, 536,674.89 and 210,046.84 is: 289,864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,894.84 : 536,674.89 = 210,046.84 : x
  2. Step 2: Convert to fraction form
    388,894.84/536,674.89 = 210,046.84/x
  3. Step 3: Cross multiply
    388,894.84x = 536,674.89 × 210,046.84
  4. Step 4: Simplify right side
    388,894.84x = 112,726,864,751.85
  5. Step 5: Solve for x
    x = 112,726,864,751.85/388,894.84
  6. Step 6: Final answer
    x = 289,864.65

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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.