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Finding the Fourth Proportional to 388,898.50, 536,680.29 and 210,050.50

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Solution

The fourth proportional to 388,898.50, 536,680.29 and 210,050.50 is: 289,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,898.50 : 536,680.29 = 210,050.50 : x
  2. Step 2: Convert to fraction form
    388,898.50/536,680.29 = 210,050.50/x
  3. Step 3: Cross multiply
    388,898.50x = 536,680.29 × 210,050.50
  4. Step 4: Simplify right side
    388,898.50x = 112,729,963,254.65
  5. Step 5: Solve for x
    x = 112,729,963,254.65/388,898.50
  6. Step 6: Final answer
    x = 289,869.88

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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.