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Finding the Fourth Proportional to 368,651.79, 552,091.95 and 210,400.47

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Solution

The fourth proportional to 368,651.79, 552,091.95 and 210,400.47 is: 315,095.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,651.79 : 552,091.95 = 210,400.47 : x
  2. Step 2: Convert to fraction form
    368,651.79/552,091.95 = 210,400.47/x
  3. Step 3: Cross multiply
    368,651.79x = 552,091.95 × 210,400.47
  4. Step 4: Simplify right side
    368,651.79x = 116,160,405,763.22
  5. Step 5: Solve for x
    x = 116,160,405,763.22/368,651.79
  6. Step 6: Final answer
    x = 315,095.19

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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.