Home / 403,948.80-605,923.20-138,009.60

Finding the Fourth Proportional to 403,948.80, 605,923.20 and 138,009.60

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Solution

The fourth proportional to 403,948.80, 605,923.20 and 138,009.60 is: 207,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,948.80 : 605,923.20 = 138,009.60 : x
  2. Step 2: Convert to fraction form
    403,948.80/605,923.20 = 138,009.60/x
  3. Step 3: Cross multiply
    403,948.80x = 605,923.20 × 138,009.60
  4. Step 4: Simplify right side
    403,948.80x = 83,623,218,462.72
  5. Step 5: Solve for x
    x = 83,623,218,462.72/403,948.80
  6. Step 6: Final answer
    x = 207,014.40

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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.