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Finding the Fourth Proportional to 480,853.68, 663,513.10 and 274,148.74

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Solution

The fourth proportional to 480,853.68, 663,513.10 and 274,148.74 is: 378,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,853.68 : 663,513.10 = 274,148.74 : x
  2. Step 2: Convert to fraction form
    480,853.68/663,513.10 = 274,148.74/x
  3. Step 3: Cross multiply
    480,853.68x = 663,513.10 × 274,148.74
  4. Step 4: Simplify right side
    480,853.68x = 181,901,277,329.57
  5. Step 5: Solve for x
    x = 181,901,277,329.57/480,853.68
  6. Step 6: Final answer
    x = 378,288.21

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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.