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Finding the Fourth Proportional to 455,883.16, 683,213.49 and 354,803.28

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Solution

The fourth proportional to 455,883.16, 683,213.49 and 354,803.28 is: 531,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,883.16 : 683,213.49 = 354,803.28 : x
  2. Step 2: Convert to fraction form
    455,883.16/683,213.49 = 354,803.28/x
  3. Step 3: Cross multiply
    455,883.16x = 683,213.49 × 354,803.28
  4. Step 4: Simplify right side
    455,883.16x = 242,406,387,192.25
  5. Step 5: Solve for x
    x = 242,406,387,192.25/455,883.16
  6. Step 6: Final answer
    x = 531,729.20

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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.