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Finding the Fourth Proportional to 343,712.30, 515,625.55 and 144,047.70

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Solution

The fourth proportional to 343,712.30, 515,625.55 and 144,047.70 is: 216,095.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,712.30 : 515,625.55 = 144,047.70 : x
  2. Step 2: Convert to fraction form
    343,712.30/515,625.55 = 144,047.70/x
  3. Step 3: Cross multiply
    343,712.30x = 515,625.55 × 144,047.70
  4. Step 4: Simplify right side
    343,712.30x = 74,274,674,178.62
  5. Step 5: Solve for x
    x = 74,274,674,178.62/343,712.30
  6. Step 6: Final answer
    x = 216,095.48

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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.