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Finding the Fourth Proportional to 529,524.84, 730,749.18 and 287,808

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Solution

The fourth proportional to 529,524.84, 730,749.18 and 287,808 is: 397,177.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,524.84 : 730,749.18 = 287,808 : x
  2. Step 2: Convert to fraction form
    529,524.84/730,749.18 = 287,808/x
  3. Step 3: Cross multiply
    529,524.84x = 730,749.18 × 287,808
  4. Step 4: Simplify right side
    529,524.84x = 210,315,459,997.44
  5. Step 5: Solve for x
    x = 210,315,459,997.44/529,524.84
  6. Step 6: Final answer
    x = 397,177.70

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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.