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Finding the Fourth Proportional to 240,639.86, 361,041.81 and 72,164.32

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Solution

The fourth proportional to 240,639.86, 361,041.81 and 72,164.32 is: 108,271.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,639.86 : 361,041.81 = 72,164.32 : x
  2. Step 2: Convert to fraction form
    240,639.86/361,041.81 = 72,164.32/x
  3. Step 3: Cross multiply
    240,639.86x = 361,041.81 × 72,164.32
  4. Step 4: Simplify right side
    240,639.86x = 26,054,335,537.00
  5. Step 5: Solve for x
    x = 26,054,335,537.00/240,639.86
  6. Step 6: Final answer
    x = 108,271.07

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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.