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Finding the Fourth Proportional to 262,345.20, 393,530.10 and 84,866.10

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Solution

The fourth proportional to 262,345.20, 393,530.10 and 84,866.10 is: 127,303.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,345.20 : 393,530.10 = 84,866.10 : x
  2. Step 2: Convert to fraction form
    262,345.20/393,530.10 = 84,866.10/x
  3. Step 3: Cross multiply
    262,345.20x = 393,530.10 × 84,866.10
  4. Step 4: Simplify right side
    262,345.20x = 33,397,363,025.62
  5. Step 5: Solve for x
    x = 33,397,363,025.62/262,345.20
  6. Step 6: Final answer
    x = 127,303.12

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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.