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Finding the Fourth Proportional to 403,483.69, 605,050.44 and 137,172.70

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Solution

The fourth proportional to 403,483.69, 605,050.44 and 137,172.70 is: 205,699.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,483.69 : 605,050.44 = 137,172.70 : x
  2. Step 2: Convert to fraction form
    403,483.69/605,050.44 = 137,172.70/x
  3. Step 3: Cross multiply
    403,483.69x = 605,050.44 × 137,172.70
  4. Step 4: Simplify right side
    403,483.69x = 82,996,402,490.99
  5. Step 5: Solve for x
    x = 82,996,402,490.99/403,483.69
  6. Step 6: Final answer
    x = 205,699.52

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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.