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Finding the Fourth Proportional to 368,186.40, 551,890.80 and 210,074.40

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Solution

The fourth proportional to 368,186.40, 551,890.80 and 210,074.40 is: 314,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,186.40 : 551,890.80 = 210,074.40 : x
  2. Step 2: Convert to fraction form
    368,186.40/551,890.80 = 210,074.40/x
  3. Step 3: Cross multiply
    368,186.40x = 551,890.80 × 210,074.40
  4. Step 4: Simplify right side
    368,186.40x = 115,938,128,675.52
  5. Step 5: Solve for x
    x = 115,938,128,675.52/368,186.40
  6. Step 6: Final answer
    x = 314,889.76

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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.