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Finding the Fourth Proportional to 357,077.09, 535,607.33 and 90,837.78

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Solution

The fourth proportional to 357,077.09, 535,607.33 and 90,837.78 is: 136,254.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,077.09 : 535,607.33 = 90,837.78 : x
  2. Step 2: Convert to fraction form
    357,077.09/535,607.33 = 90,837.78/x
  3. Step 3: Cross multiply
    357,077.09x = 535,607.33 × 90,837.78
  4. Step 4: Simplify right side
    357,077.09x = 48,653,380,354.74
  5. Step 5: Solve for x
    x = 48,653,380,354.74/357,077.09
  6. Step 6: Final answer
    x = 136,254.56

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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.