Home / 387,721.22-581,674.77-187,807.95

Finding the Fourth Proportional to 387,721.22, 581,674.77 and 187,807.95

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Solution

The fourth proportional to 387,721.22, 581,674.77 and 187,807.95 is: 281,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,721.22 : 581,674.77 = 187,807.95 : x
  2. Step 2: Convert to fraction form
    387,721.22/581,674.77 = 187,807.95/x
  3. Step 3: Cross multiply
    387,721.22x = 581,674.77 × 187,807.95
  4. Step 4: Simplify right side
    387,721.22x = 109,243,146,120.42
  5. Step 5: Solve for x
    x = 109,243,146,120.42/387,721.22
  6. Step 6: Final answer
    x = 281,756.95

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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.