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Finding the Fourth Proportional to 343,996.80, 514,828.80 and 302,006.40

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Solution

The fourth proportional to 343,996.80, 514,828.80 and 302,006.40 is: 451,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,996.80 : 514,828.80 = 302,006.40 : x
  2. Step 2: Convert to fraction form
    343,996.80/514,828.80 = 302,006.40/x
  3. Step 3: Cross multiply
    343,996.80x = 514,828.80 × 302,006.40
  4. Step 4: Simplify right side
    343,996.80x = 155,481,592,504.32
  5. Step 5: Solve for x
    x = 155,481,592,504.32/343,996.80
  6. Step 6: Final answer
    x = 451,985.58

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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.