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Finding the Fourth Proportional to 403,573.60, 604,928.40 and 137,087.20

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Solution

The fourth proportional to 403,573.60, 604,928.40 and 137,087.20 is: 205,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,573.60 : 604,928.40 = 137,087.20 : x
  2. Step 2: Convert to fraction form
    403,573.60/604,928.40 = 137,087.20/x
  3. Step 3: Cross multiply
    403,573.60x = 604,928.40 × 137,087.20
  4. Step 4: Simplify right side
    403,573.60x = 82,927,940,556.48
  5. Step 5: Solve for x
    x = 82,927,940,556.48/403,573.60
  6. Step 6: Final answer
    x = 205,484.06

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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.