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Finding the Fourth Proportional to 403,925.60, 605,888.40 and 137,662.40

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Solution

The fourth proportional to 403,925.60, 605,888.40 and 137,662.40 is: 206,493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,925.60 : 605,888.40 = 137,662.40 : x
  2. Step 2: Convert to fraction form
    403,925.60/605,888.40 = 137,662.40/x
  3. Step 3: Cross multiply
    403,925.60x = 605,888.40 × 137,662.40
  4. Step 4: Simplify right side
    403,925.60x = 83,408,051,276.16
  5. Step 5: Solve for x
    x = 83,408,051,276.16/403,925.60
  6. Step 6: Final answer
    x = 206,493.60

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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.