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Finding the Fourth Proportional to 480,825.30, 663,330.42 and 289,730.10

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Solution

The fourth proportional to 480,825.30, 663,330.42 and 289,730.10 is: 399,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,825.30 : 663,330.42 = 289,730.10 : x
  2. Step 2: Convert to fraction form
    480,825.30/663,330.42 = 289,730.10/x
  3. Step 3: Cross multiply
    480,825.30x = 663,330.42 × 289,730.10
  4. Step 4: Simplify right side
    480,825.30x = 192,186,788,919.64
  5. Step 5: Solve for x
    x = 192,186,788,919.64/480,825.30
  6. Step 6: Final answer
    x = 399,701.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.