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Finding the Fourth Proportional to 344,531.80, 515,631.30 and 302,541.40

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Solution

The fourth proportional to 344,531.80, 515,631.30 and 302,541.40 is: 452,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,531.80 : 515,631.30 = 302,541.40 : x
  2. Step 2: Convert to fraction form
    344,531.80/515,631.30 = 302,541.40/x
  3. Step 3: Cross multiply
    344,531.80x = 515,631.30 × 302,541.40
  4. Step 4: Simplify right side
    344,531.80x = 155,999,815,385.82
  5. Step 5: Solve for x
    x = 155,999,815,385.82/344,531.80
  6. Step 6: Final answer
    x = 452,787.86

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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.