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Finding the Fourth Proportional to 403,483.44, 605,050.07 and 137,172.45

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Solution

The fourth proportional to 403,483.44, 605,050.07 and 137,172.45 is: 205,699.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,483.44 : 605,050.07 = 137,172.45 : x
  2. Step 2: Convert to fraction form
    403,483.44/605,050.07 = 137,172.45/x
  3. Step 3: Cross multiply
    403,483.44x = 605,050.07 × 137,172.45
  4. Step 4: Simplify right side
    403,483.44x = 82,996,199,788.71
  5. Step 5: Solve for x
    x = 82,996,199,788.71/403,483.44
  6. Step 6: Final answer
    x = 205,699.15

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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.