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Finding the Fourth Proportional to 352,002.90, 528,004.35 and 85,761.30

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Solution

The fourth proportional to 352,002.90, 528,004.35 and 85,761.30 is: 128,641.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,002.90 : 528,004.35 = 85,761.30 : x
  2. Step 2: Convert to fraction form
    352,002.90/528,004.35 = 85,761.30/x
  3. Step 3: Cross multiply
    352,002.90x = 528,004.35 × 85,761.30
  4. Step 4: Simplify right side
    352,002.90x = 45,282,339,461.66
  5. Step 5: Solve for x
    x = 45,282,339,461.66/352,002.90
  6. Step 6: Final answer
    x = 128,641.95

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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.