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Finding the Fourth Proportional to 388,303.32, 536,023.89 and 261,052.71

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Solution

The fourth proportional to 388,303.32, 536,023.89 and 261,052.71 is: 360,363.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,303.32 : 536,023.89 = 261,052.71 : x
  2. Step 2: Convert to fraction form
    388,303.32/536,023.89 = 261,052.71/x
  3. Step 3: Cross multiply
    388,303.32x = 536,023.89 × 261,052.71
  4. Step 4: Simplify right side
    388,303.32x = 139,930,489,109.24
  5. Step 5: Solve for x
    x = 139,930,489,109.24/388,303.32
  6. Step 6: Final answer
    x = 360,363.88

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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.