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Finding the Fourth Proportional to 357,051.78, 535,575.33 and 90,810

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Solution

The fourth proportional to 357,051.78, 535,575.33 and 90,810 is: 136,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,051.78 : 535,575.33 = 90,810 : x
  2. Step 2: Convert to fraction form
    357,051.78/535,575.33 = 90,810/x
  3. Step 3: Cross multiply
    357,051.78x = 535,575.33 × 90,810
  4. Step 4: Simplify right side
    357,051.78x = 48,635,595,717.30
  5. Step 5: Solve for x
    x = 48,635,595,717.30/357,051.78
  6. Step 6: Final answer
    x = 136,214.40

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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.