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Finding the Fourth Proportional to 388,897.10, 536,721.28 and 245,650.22

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Solution

The fourth proportional to 388,897.10, 536,721.28 and 245,650.22 is: 339,024.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,897.10 : 536,721.28 = 245,650.22 : x
  2. Step 2: Convert to fraction form
    388,897.10/536,721.28 = 245,650.22/x
  3. Step 3: Cross multiply
    388,897.10x = 536,721.28 × 245,650.22
  4. Step 4: Simplify right side
    388,897.10x = 131,845,697,212.95
  5. Step 5: Solve for x
    x = 131,845,697,212.95/388,897.10
  6. Step 6: Final answer
    x = 339,024.64

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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.