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Finding the Fourth Proportional to 356,815.76, 535,272.60 and 207,126.32

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Solution

The fourth proportional to 356,815.76, 535,272.60 and 207,126.32 is: 310,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,815.76 : 535,272.60 = 207,126.32 : x
  2. Step 2: Convert to fraction form
    356,815.76/535,272.60 = 207,126.32/x
  3. Step 3: Cross multiply
    356,815.76x = 535,272.60 × 207,126.32
  4. Step 4: Simplify right side
    356,815.76x = 110,869,043,834.83
  5. Step 5: Solve for x
    x = 110,869,043,834.83/356,815.76
  6. Step 6: Final answer
    x = 310,717.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.