Home / 290,130.72-435,330-132,407.52

Finding the Fourth Proportional to 290,130.72, 435,330 and 132,407.52

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Solution

The fourth proportional to 290,130.72, 435,330 and 132,407.52 is: 198,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,130.72 : 435,330 = 132,407.52 : x
  2. Step 2: Convert to fraction form
    290,130.72/435,330 = 132,407.52/x
  3. Step 3: Cross multiply
    290,130.72x = 435,330 × 132,407.52
  4. Step 4: Simplify right side
    290,130.72x = 57,640,965,681.60
  5. Step 5: Solve for x
    x = 57,640,965,681.60/290,130.72
  6. Step 6: Final answer
    x = 198,672.40

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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.