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Finding the Fourth Proportional to 535,387.99, 803,395.48 and 215,490.03

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Solution

The fourth proportional to 535,387.99, 803,395.48 and 215,490.03 is: 323,361.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,387.99 : 803,395.48 = 215,490.03 : x
  2. Step 2: Convert to fraction form
    535,387.99/803,395.48 = 215,490.03/x
  3. Step 3: Cross multiply
    535,387.99x = 803,395.48 × 215,490.03
  4. Step 4: Simplify right side
    535,387.99x = 173,123,712,070.09
  5. Step 5: Solve for x
    x = 173,123,712,070.09/535,387.99
  6. Step 6: Final answer
    x = 323,361.22

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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.