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Finding the Fourth Proportional to 515,172.98, 772,214.06 and 173,290.94

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Solution

The fourth proportional to 515,172.98, 772,214.06 and 173,290.94 is: 259,752.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,172.98 : 772,214.06 = 173,290.94 : x
  2. Step 2: Convert to fraction form
    515,172.98/772,214.06 = 173,290.94/x
  3. Step 3: Cross multiply
    515,172.98x = 772,214.06 × 173,290.94
  4. Step 4: Simplify right side
    515,172.98x = 133,817,696,477.55
  5. Step 5: Solve for x
    x = 133,817,696,477.55/515,172.98
  6. Step 6: Final answer
    x = 259,752.94

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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.