Home / 403,921.60-605,946.40-137,707.20

Finding the Fourth Proportional to 403,921.60, 605,946.40 and 137,707.20

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Solution

The fourth proportional to 403,921.60, 605,946.40 and 137,707.20 is: 206,582.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,921.60 : 605,946.40 = 137,707.20 : x
  2. Step 2: Convert to fraction form
    403,921.60/605,946.40 = 137,707.20/x
  3. Step 3: Cross multiply
    403,921.60x = 605,946.40 × 137,707.20
  4. Step 4: Simplify right side
    403,921.60x = 83,443,182,094.08
  5. Step 5: Solve for x
    x = 83,443,182,094.08/403,921.60
  6. Step 6: Final answer
    x = 206,582.62

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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.