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Finding the Fourth Proportional to 272,303.60, 381,618.70 and 272,303.60

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Solution

The fourth proportional to 272,303.60, 381,618.70 and 272,303.60 is: 381,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,303.60 : 381,618.70 = 272,303.60 : x
  2. Step 2: Convert to fraction form
    272,303.60/381,618.70 = 272,303.60/x
  3. Step 3: Cross multiply
    272,303.60x = 381,618.70 × 272,303.60
  4. Step 4: Simplify right side
    272,303.60x = 103,916,145,837.32
  5. Step 5: Solve for x
    x = 103,916,145,837.32/272,303.60
  6. Step 6: Final answer
    x = 381,618.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.