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Finding the Fourth Proportional to 360,005.20, 538,695.60 and 328,512.40

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Solution

The fourth proportional to 360,005.20, 538,695.60 and 328,512.40 is: 491,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,005.20 : 538,695.60 = 328,512.40 : x
  2. Step 2: Convert to fraction form
    360,005.20/538,695.60 = 328,512.40/x
  3. Step 3: Cross multiply
    360,005.20x = 538,695.60 × 328,512.40
  4. Step 4: Simplify right side
    360,005.20x = 176,968,184,425.44
  5. Step 5: Solve for x
    x = 176,968,184,425.44/360,005.20
  6. Step 6: Final answer
    x = 491,571.19

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1.5x scale

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.