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Finding the Fourth Proportional to 388,595.61, 536,168.57 and 218,829.69

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Solution

The fourth proportional to 388,595.61, 536,168.57 and 218,829.69 is: 301,932.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,595.61 : 536,168.57 = 218,829.69 : x
  2. Step 2: Convert to fraction form
    388,595.61/536,168.57 = 218,829.69/x
  3. Step 3: Cross multiply
    388,595.61x = 536,168.57 × 218,829.69
  4. Step 4: Simplify right side
    388,595.61x = 117,329,600,866.70
  5. Step 5: Solve for x
    x = 117,329,600,866.70/388,595.61
  6. Step 6: Final answer
    x = 301,932.39

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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.