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Finding the Fourth Proportional to 480,639.88, 720,609.90 and 231,030.28

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Solution

The fourth proportional to 480,639.88, 720,609.90 and 231,030.28 is: 346,377.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,639.88 : 720,609.90 = 231,030.28 : x
  2. Step 2: Convert to fraction form
    480,639.88/720,609.90 = 231,030.28/x
  3. Step 3: Cross multiply
    480,639.88x = 720,609.90 × 231,030.28
  4. Step 4: Simplify right side
    480,639.88x = 166,482,706,967.77
  5. Step 5: Solve for x
    x = 166,482,706,967.77/480,639.88
  6. Step 6: Final answer
    x = 346,377.22

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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.