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Finding the Fourth Proportional to 381,646.40, 575,212.82 and 328,974.12

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Solution

The fourth proportional to 381,646.40, 575,212.82 and 328,974.12 is: 495,825.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,646.40 : 575,212.82 = 328,974.12 : x
  2. Step 2: Convert to fraction form
    381,646.40/575,212.82 = 328,974.12/x
  3. Step 3: Cross multiply
    381,646.40x = 575,212.82 × 328,974.12
  4. Step 4: Simplify right side
    381,646.40x = 189,230,130,861.00
  5. Step 5: Solve for x
    x = 189,230,130,861.00/381,646.40
  6. Step 6: Final answer
    x = 495,825.80

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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.