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Finding the Fourth Proportional to 447,071.62, 670,690.32 and 147,573.04

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Solution

The fourth proportional to 447,071.62, 670,690.32 and 147,573.04 is: 221,386.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,071.62 : 670,690.32 = 147,573.04 : x
  2. Step 2: Convert to fraction form
    447,071.62/670,690.32 = 147,573.04/x
  3. Step 3: Cross multiply
    447,071.62x = 670,690.32 × 147,573.04
  4. Step 4: Simplify right side
    447,071.62x = 98,975,809,420.97
  5. Step 5: Solve for x
    x = 98,975,809,420.97/447,071.62
  6. Step 6: Final answer
    x = 221,386.92

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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.