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Finding the Fourth Proportional to 343,675.88, 515,345.13 and 141,235.28

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Solution

The fourth proportional to 343,675.88, 515,345.13 and 141,235.28 is: 211,783.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,675.88 : 515,345.13 = 141,235.28 : x
  2. Step 2: Convert to fraction form
    343,675.88/515,345.13 = 141,235.28/x
  3. Step 3: Cross multiply
    343,675.88x = 515,345.13 × 141,235.28
  4. Step 4: Simplify right side
    343,675.88x = 72,784,911,155.46
  5. Step 5: Solve for x
    x = 72,784,911,155.46/343,675.88
  6. Step 6: Final answer
    x = 211,783.59

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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.