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Finding the Fourth Proportional to 354,874.40, 532,311.60 and 328,047.20

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Solution

The fourth proportional to 354,874.40, 532,311.60 and 328,047.20 is: 492,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,874.40 : 532,311.60 = 328,047.20 : x
  2. Step 2: Convert to fraction form
    354,874.40/532,311.60 = 328,047.20/x
  3. Step 3: Cross multiply
    354,874.40x = 532,311.60 × 328,047.20
  4. Step 4: Simplify right side
    354,874.40x = 174,623,329,907.52
  5. Step 5: Solve for x
    x = 174,623,329,907.52/354,874.40
  6. Step 6: Final answer
    x = 492,070.80

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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.