Home / 210,422.50-315,784.62-142,785.88

Finding the Fourth Proportional to 210,422.50, 315,784.62 and 142,785.88

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Solution

The fourth proportional to 210,422.50, 315,784.62 and 142,785.88 is: 214,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,422.50 : 315,784.62 = 142,785.88 : x
  2. Step 2: Convert to fraction form
    210,422.50/315,784.62 = 142,785.88/x
  3. Step 3: Cross multiply
    210,422.50x = 315,784.62 × 142,785.88
  4. Step 4: Simplify right side
    210,422.50x = 45,089,584,857.17
  5. Step 5: Solve for x
    x = 45,089,584,857.17/210,422.50
  6. Step 6: Final answer
    x = 214,281.20

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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.