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Finding the Fourth Proportional to 529,762.20, 731,068.03 and 288,044.70

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Solution

The fourth proportional to 529,762.20, 731,068.03 and 288,044.70 is: 397,499.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,762.20 : 731,068.03 = 288,044.70 : x
  2. Step 2: Convert to fraction form
    529,762.20/731,068.03 = 288,044.70/x
  3. Step 3: Cross multiply
    529,762.20x = 731,068.03 × 288,044.70
  4. Step 4: Simplify right side
    529,762.20x = 210,580,271,380.94
  5. Step 5: Solve for x
    x = 210,580,271,380.94/529,762.20
  6. Step 6: Final answer
    x = 397,499.62

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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.