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Finding the Fourth Proportional to 295,315.07, 442,978.88 and 105,787.76

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Solution

The fourth proportional to 295,315.07, 442,978.88 and 105,787.76 is: 158,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,315.07 : 442,978.88 = 105,787.76 : x
  2. Step 2: Convert to fraction form
    295,315.07/442,978.88 = 105,787.76/x
  3. Step 3: Cross multiply
    295,315.07x = 442,978.88 × 105,787.76
  4. Step 4: Simplify right side
    295,315.07x = 46,861,740,698.68
  5. Step 5: Solve for x
    x = 46,861,740,698.68/295,315.07
  6. Step 6: Final answer
    x = 158,683.88

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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.