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Finding the Fourth Proportional to 326,041.77, 449,710.07 and 315,068.43

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Solution

The fourth proportional to 326,041.77, 449,710.07 and 315,068.43 is: 434,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,041.77 : 449,710.07 = 315,068.43 : x
  2. Step 2: Convert to fraction form
    326,041.77/449,710.07 = 315,068.43/x
  3. Step 3: Cross multiply
    326,041.77x = 449,710.07 × 315,068.43
  4. Step 4: Simplify right side
    326,041.77x = 141,689,444,134.75
  5. Step 5: Solve for x
    x = 141,689,444,134.75/326,041.77
  6. Step 6: Final answer
    x = 434,574.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.