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Finding the Fourth Proportional to 455,220.50, 628,204.32 and 251,271.47

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Solution

The fourth proportional to 455,220.50, 628,204.32 and 251,271.47 is: 346,754.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,220.50 : 628,204.32 = 251,271.47 : x
  2. Step 2: Convert to fraction form
    455,220.50/628,204.32 = 251,271.47/x
  3. Step 3: Cross multiply
    455,220.50x = 628,204.32 × 251,271.47
  4. Step 4: Simplify right side
    455,220.50x = 157,849,822,946.75
  5. Step 5: Solve for x
    x = 157,849,822,946.75/455,220.50
  6. Step 6: Final answer
    x = 346,754.65

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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.