Home / 421,017.47-631,568.33-121,505.39

Finding the Fourth Proportional to 421,017.47, 631,568.33 and 121,505.39

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Solution

The fourth proportional to 421,017.47, 631,568.33 and 121,505.39 is: 182,270.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,017.47 : 631,568.33 = 121,505.39 : x
  2. Step 2: Convert to fraction form
    421,017.47/631,568.33 = 121,505.39/x
  3. Step 3: Cross multiply
    421,017.47x = 631,568.33 × 121,505.39
  4. Step 4: Simplify right side
    421,017.47x = 76,738,956,248.30
  5. Step 5: Solve for x
    x = 76,738,956,248.30/421,017.47
  6. Step 6: Final answer
    x = 182,270.24

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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.