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Finding the Fourth Proportional to 239,720.58, 359,741.40 and 99,479.34

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Solution

The fourth proportional to 239,720.58, 359,741.40 and 99,479.34 is: 149,285.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,720.58 : 359,741.40 = 99,479.34 : x
  2. Step 2: Convert to fraction form
    239,720.58/359,741.40 = 99,479.34/x
  3. Step 3: Cross multiply
    239,720.58x = 359,741.40 × 99,479.34
  4. Step 4: Simplify right side
    239,720.58x = 35,786,837,042.68
  5. Step 5: Solve for x
    x = 35,786,837,042.68/239,720.58
  6. Step 6: Final answer
    x = 149,285.63

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1.5x scale

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.