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Finding the Fourth Proportional to 239,790.69, 330,909.56 and 130,894.59

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Solution

The fourth proportional to 239,790.69, 330,909.56 and 130,894.59 is: 180,633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,790.69 : 330,909.56 = 130,894.59 : x
  2. Step 2: Convert to fraction form
    239,790.69/330,909.56 = 130,894.59/x
  3. Step 3: Cross multiply
    239,790.69x = 330,909.56 × 130,894.59
  4. Step 4: Simplify right side
    239,790.69x = 43,314,270,528.81
  5. Step 5: Solve for x
    x = 43,314,270,528.81/239,790.69
  6. Step 6: Final answer
    x = 180,633.66

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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.