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Finding the Fourth Proportional to 388,530.96, 536,030.49 and 235,458.72

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Solution

The fourth proportional to 388,530.96, 536,030.49 and 235,458.72 is: 324,846.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,530.96 : 536,030.49 = 235,458.72 : x
  2. Step 2: Convert to fraction form
    388,530.96/536,030.49 = 235,458.72/x
  3. Step 3: Cross multiply
    388,530.96x = 536,030.49 × 235,458.72
  4. Step 4: Simplify right side
    388,530.96x = 126,213,053,939.34
  5. Step 5: Solve for x
    x = 126,213,053,939.34/388,530.96
  6. Step 6: Final answer
    x = 324,846.84

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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.