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Finding the Fourth Proportional to 388,908, 536,693.44 and 210,060

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Solution

The fourth proportional to 388,908, 536,693.44 and 210,060 is: 289,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,908 : 536,693.44 = 210,060 : x
  2. Step 2: Convert to fraction form
    388,908/536,693.44 = 210,060/x
  3. Step 3: Cross multiply
    388,908x = 536,693.44 × 210,060
  4. Step 4: Simplify right side
    388,908x = 112,737,824,006.40
  5. Step 5: Solve for x
    x = 112,737,824,006.40/388,908
  6. Step 6: Final answer
    x = 289,883.02

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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.