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Finding the Fourth Proportional to 235,430.10, 353,145.15 and 135,897.30

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Solution

The fourth proportional to 235,430.10, 353,145.15 and 135,897.30 is: 203,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,430.10 : 353,145.15 = 135,897.30 : x
  2. Step 2: Convert to fraction form
    235,430.10/353,145.15 = 135,897.30/x
  3. Step 3: Cross multiply
    235,430.10x = 353,145.15 × 135,897.30
  4. Step 4: Simplify right side
    235,430.10x = 47,991,472,393.10
  5. Step 5: Solve for x
    x = 47,991,472,393.10/235,430.10
  6. Step 6: Final answer
    x = 203,845.95

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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.