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Finding the Fourth Proportional to 387,696, 581,536.98 and 211,325.52

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Solution

The fourth proportional to 387,696, 581,536.98 and 211,325.52 is: 316,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,696 : 581,536.98 = 211,325.52 : x
  2. Step 2: Convert to fraction form
    387,696/581,536.98 = 211,325.52/x
  3. Step 3: Cross multiply
    387,696x = 581,536.98 × 211,325.52
  4. Step 4: Simplify right side
    387,696x = 122,893,604,697.73
  5. Step 5: Solve for x
    x = 122,893,604,697.73/387,696
  6. Step 6: Final answer
    x = 316,984.45

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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.