Home / 421,027.02-631,335.81-140,449.50

Finding the Fourth Proportional to 421,027.02, 631,335.81 and 140,449.50

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Solution

The fourth proportional to 421,027.02, 631,335.81 and 140,449.50 is: 210,605.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,027.02 : 631,335.81 = 140,449.50 : x
  2. Step 2: Convert to fraction form
    421,027.02/631,335.81 = 140,449.50/x
  3. Step 3: Cross multiply
    421,027.02x = 631,335.81 × 140,449.50
  4. Step 4: Simplify right side
    421,027.02x = 88,670,798,846.60
  5. Step 5: Solve for x
    x = 88,670,798,846.60/421,027.02
  6. Step 6: Final answer
    x = 210,605.96

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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.