Home / 387,907.03-535,318.23-215,838.73

Finding the Fourth Proportional to 387,907.03, 535,318.23 and 215,838.73

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Solution

The fourth proportional to 387,907.03, 535,318.23 and 215,838.73 is: 297,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,907.03 : 535,318.23 = 215,838.73 : x
  2. Step 2: Convert to fraction form
    387,907.03/535,318.23 = 215,838.73/x
  3. Step 3: Cross multiply
    387,907.03x = 535,318.23 × 215,838.73
  4. Step 4: Simplify right side
    387,907.03x = 115,542,406,909.05
  5. Step 5: Solve for x
    x = 115,542,406,909.05/387,907.03
  6. Step 6: Final answer
    x = 297,861.08

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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.