Home / 290,156.12-435,357.21-140,507.92

Finding the Fourth Proportional to 290,156.12, 435,357.21 and 140,507.92

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Solution

The fourth proportional to 290,156.12, 435,357.21 and 140,507.92 is: 210,821.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,156.12 : 435,357.21 = 140,507.92 : x
  2. Step 2: Convert to fraction form
    290,156.12/435,357.21 = 140,507.92/x
  3. Step 3: Cross multiply
    290,156.12x = 435,357.21 × 140,507.92
  4. Step 4: Simplify right side
    290,156.12x = 61,171,133,470.78
  5. Step 5: Solve for x
    x = 61,171,133,470.78/290,156.12
  6. Step 6: Final answer
    x = 210,821.45

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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.