Home / 290,131.20-434,966.40-158,803.20

Finding the Fourth Proportional to 290,131.20, 434,966.40 and 158,803.20

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Solution

The fourth proportional to 290,131.20, 434,966.40 and 158,803.20 is: 238,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,131.20 : 434,966.40 = 158,803.20 : x
  2. Step 2: Convert to fraction form
    290,131.20/434,966.40 = 158,803.20/x
  3. Step 3: Cross multiply
    290,131.20x = 434,966.40 × 158,803.20
  4. Step 4: Simplify right side
    290,131.20x = 69,074,056,212.48
  5. Step 5: Solve for x
    x = 69,074,056,212.48/290,131.20
  6. Step 6: Final answer
    x = 238,078.69

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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.