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Finding the Fourth Proportional to 343,668.02, 515,535.51 and 127,584.86

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Solution

The fourth proportional to 343,668.02, 515,535.51 and 127,584.86 is: 191,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,668.02 : 515,535.51 = 127,584.86 : x
  2. Step 2: Convert to fraction form
    343,668.02/515,535.51 = 127,584.86/x
  3. Step 3: Cross multiply
    343,668.02x = 515,535.51 × 127,584.86
  4. Step 4: Simplify right side
    343,668.02x = 65,774,525,868.38
  5. Step 5: Solve for x
    x = 65,774,525,868.38/343,668.02
  6. Step 6: Final answer
    x = 191,389.72

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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.