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Finding the Fourth Proportional to 343,710.80, 515,128.80 and 165,834.80

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Solution

The fourth proportional to 343,710.80, 515,128.80 and 165,834.80 is: 248,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,710.80 : 515,128.80 = 165,834.80 : x
  2. Step 2: Convert to fraction form
    343,710.80/515,128.80 = 165,834.80/x
  3. Step 3: Cross multiply
    343,710.80x = 515,128.80 × 165,834.80
  4. Step 4: Simplify right side
    343,710.80x = 85,426,281,522.24
  5. Step 5: Solve for x
    x = 85,426,281,522.24/343,710.80
  6. Step 6: Final answer
    x = 248,541.16

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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.