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Finding the Fourth Proportional to 388,925.52, 536,717.20 and 210,077.52

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Solution

The fourth proportional to 388,925.52, 536,717.20 and 210,077.52 is: 289,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,925.52 : 536,717.20 = 210,077.52 : x
  2. Step 2: Convert to fraction form
    388,925.52/536,717.20 = 210,077.52/x
  3. Step 3: Cross multiply
    388,925.52x = 536,717.20 × 210,077.52
  4. Step 4: Simplify right side
    388,925.52x = 112,752,218,317.34
  5. Step 5: Solve for x
    x = 112,752,218,317.34/388,925.52
  6. Step 6: Final answer
    x = 289,906.97

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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.