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Finding the Fourth Proportional to 315,880.92, 435,908.88 and 178,058.88

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Solution

The fourth proportional to 315,880.92, 435,908.88 and 178,058.88 is: 245,717.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,880.92 : 435,908.88 = 178,058.88 : x
  2. Step 2: Convert to fraction form
    315,880.92/435,908.88 = 178,058.88/x
  3. Step 3: Cross multiply
    315,880.92x = 435,908.88 × 178,058.88
  4. Step 4: Simplify right side
    315,880.92x = 77,617,446,954.85
  5. Step 5: Solve for x
    x = 77,617,446,954.85/315,880.92
  6. Step 6: Final answer
    x = 245,717.43

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1.5x scale

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.