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Finding the Fourth Proportional to 296,656.80, 444,981.28 and 72,019

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Solution

The fourth proportional to 296,656.80, 444,981.28 and 72,019 is: 108,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,656.80 : 444,981.28 = 72,019 : x
  2. Step 2: Convert to fraction form
    296,656.80/444,981.28 = 72,019/x
  3. Step 3: Cross multiply
    296,656.80x = 444,981.28 × 72,019
  4. Step 4: Simplify right side
    296,656.80x = 32,047,106,804.32
  5. Step 5: Solve for x
    x = 32,047,106,804.32/296,656.80
  6. Step 6: Final answer
    x = 108,027.55

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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.