Home / 421,216.81-631,936.01-151,372.21

Finding the Fourth Proportional to 421,216.81, 631,936.01 and 151,372.21

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Solution

The fourth proportional to 421,216.81, 631,936.01 and 151,372.21 is: 227,098.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,216.81 : 631,936.01 = 151,372.21 : x
  2. Step 2: Convert to fraction form
    421,216.81/631,936.01 = 151,372.21/x
  3. Step 3: Cross multiply
    421,216.81x = 631,936.01 × 151,372.21
  4. Step 4: Simplify right side
    421,216.81x = 95,657,549,655.42
  5. Step 5: Solve for x
    x = 95,657,549,655.42/421,216.81
  6. Step 6: Final answer
    x = 227,098.13

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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.