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Finding the Fourth Proportional to 343,885.19, 515,661.77 and 144,151.94

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Solution

The fourth proportional to 343,885.19, 515,661.77 and 144,151.94 is: 216,158.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,885.19 : 515,661.77 = 144,151.94 : x
  2. Step 2: Convert to fraction form
    343,885.19/515,661.77 = 144,151.94/x
  3. Step 3: Cross multiply
    343,885.19x = 515,661.77 × 144,151.94
  4. Step 4: Simplify right side
    343,885.19x = 74,333,641,230.27
  5. Step 5: Solve for x
    x = 74,333,641,230.27/343,885.19
  6. Step 6: Final answer
    x = 216,158.31

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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.