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Finding the Fourth Proportional to 480,903.20, 663,503.12 and 276,948.72

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Solution

The fourth proportional to 480,903.20, 663,503.12 and 276,948.72 is: 382,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,903.20 : 663,503.12 = 276,948.72 : x
  2. Step 2: Convert to fraction form
    480,903.20/663,503.12 = 276,948.72/x
  3. Step 3: Cross multiply
    480,903.20x = 663,503.12 × 276,948.72
  4. Step 4: Simplify right side
    480,903.20x = 183,756,339,800.01
  5. Step 5: Solve for x
    x = 183,756,339,800.01/480,903.20
  6. Step 6: Final answer
    x = 382,106.71

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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.