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Finding the Fourth Proportional to 260,379.72, 359,342.10 and 145,696.14

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Solution

The fourth proportional to 260,379.72, 359,342.10 and 145,696.14 is: 201,070.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,379.72 : 359,342.10 = 145,696.14 : x
  2. Step 2: Convert to fraction form
    260,379.72/359,342.10 = 145,696.14/x
  3. Step 3: Cross multiply
    260,379.72x = 359,342.10 × 145,696.14
  4. Step 4: Simplify right side
    260,379.72x = 52,354,756,909.49
  5. Step 5: Solve for x
    x = 52,354,756,909.49/260,379.72
  6. Step 6: Final answer
    x = 201,070.79

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1.5x scale

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.