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Finding the Fourth Proportional to 290,237.60, 435,391.01 and 140,370.20

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Solution

The fourth proportional to 290,237.60, 435,391.01 and 140,370.20 is: 210,572.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,237.60 : 435,391.01 = 140,370.20 : x
  2. Step 2: Convert to fraction form
    290,237.60/435,391.01 = 140,370.20/x
  3. Step 3: Cross multiply
    290,237.60x = 435,391.01 × 140,370.20
  4. Step 4: Simplify right side
    290,237.60x = 61,115,923,151.90
  5. Step 5: Solve for x
    x = 61,115,923,151.90/290,237.60
  6. Step 6: Final answer
    x = 210,572.04

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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.