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Finding the Fourth Proportional to 388,764.50, 536,500.41 and 216,677.71

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Solution

The fourth proportional to 388,764.50, 536,500.41 and 216,677.71 is: 299,018.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,764.50 : 536,500.41 = 216,677.71 : x
  2. Step 2: Convert to fraction form
    388,764.50/536,500.41 = 216,677.71/x
  3. Step 3: Cross multiply
    388,764.50x = 536,500.41 × 216,677.71
  4. Step 4: Simplify right side
    388,764.50x = 116,247,677,570.36
  5. Step 5: Solve for x
    x = 116,247,677,570.36/388,764.50
  6. Step 6: Final answer
    x = 299,018.24

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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.