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Finding the Fourth Proportional to 455,489.80, 683,649.28 and 242,436.56

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Solution

The fourth proportional to 455,489.80, 683,649.28 and 242,436.56 is: 363,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,489.80 : 683,649.28 = 242,436.56 : x
  2. Step 2: Convert to fraction form
    455,489.80/683,649.28 = 242,436.56/x
  3. Step 3: Cross multiply
    455,489.80x = 683,649.28 × 242,436.56
  4. Step 4: Simplify right side
    455,489.80x = 165,741,579,689.68
  5. Step 5: Solve for x
    x = 165,741,579,689.68/455,489.80
  6. Step 6: Final answer
    x = 363,875.50

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1.5x scale

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.