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Finding the Fourth Proportional to 387,653.88, 581,491.74 and 107,171.10

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Solution

The fourth proportional to 387,653.88, 581,491.74 and 107,171.10 is: 160,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,653.88 : 581,491.74 = 107,171.10 : x
  2. Step 2: Convert to fraction form
    387,653.88/581,491.74 = 107,171.10/x
  3. Step 3: Cross multiply
    387,653.88x = 581,491.74 × 107,171.10
  4. Step 4: Simplify right side
    387,653.88x = 62,319,109,416.71
  5. Step 5: Solve for x
    x = 62,319,109,416.71/387,653.88
  6. Step 6: Final answer
    x = 160,759.67

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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.