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Finding the Fourth Proportional to 455,153.46, 628,064.28 and 251,200.68

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Solution

The fourth proportional to 455,153.46, 628,064.28 and 251,200.68 is: 346,630.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,153.46 : 628,064.28 = 251,200.68 : x
  2. Step 2: Convert to fraction form
    455,153.46/628,064.28 = 251,200.68/x
  3. Step 3: Cross multiply
    455,153.46x = 628,064.28 × 251,200.68
  4. Step 4: Simplify right side
    455,153.46x = 157,770,174,219.71
  5. Step 5: Solve for x
    x = 157,770,174,219.71/455,153.46
  6. Step 6: Final answer
    x = 346,630.73

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1.5x scale

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.