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Finding the Fourth Proportional to 381,645.77, 575,211.88 and 328,973.50

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Solution

The fourth proportional to 381,645.77, 575,211.88 and 328,973.50 is: 495,824.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,645.77 : 575,211.88 = 328,973.50 : x
  2. Step 2: Convert to fraction form
    381,645.77/575,211.88 = 328,973.50/x
  3. Step 3: Cross multiply
    381,645.77x = 575,211.88 × 328,973.50
  4. Step 4: Simplify right side
    381,645.77x = 189,229,460,884.25
  5. Step 5: Solve for x
    x = 189,229,460,884.25/381,645.77
  6. Step 6: Final answer
    x = 495,824.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.