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Finding the Fourth Proportional to 388,656.82, 536,353.41 and 218,897.02

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Solution

The fourth proportional to 388,656.82, 536,353.41 and 218,897.02 is: 302,081.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,656.82 : 536,353.41 = 218,897.02 : x
  2. Step 2: Convert to fraction form
    388,656.82/536,353.41 = 218,897.02/x
  3. Step 3: Cross multiply
    388,656.82x = 536,353.41 × 218,897.02
  4. Step 4: Simplify right side
    388,656.82x = 117,406,163,115.84
  5. Step 5: Solve for x
    x = 117,406,163,115.84/388,656.82
  6. Step 6: Final answer
    x = 302,081.83

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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.