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Finding the Fourth Proportional to 328,081.60, 452,508.12 and 291,332.28

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Solution

The fourth proportional to 328,081.60, 452,508.12 and 291,332.28 is: 401,821.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,081.60 : 452,508.12 = 291,332.28 : x
  2. Step 2: Convert to fraction form
    328,081.60/452,508.12 = 291,332.28/x
  3. Step 3: Cross multiply
    328,081.60x = 452,508.12 × 291,332.28
  4. Step 4: Simplify right side
    328,081.60x = 131,830,222,318.11
  5. Step 5: Solve for x
    x = 131,830,222,318.11/328,081.60
  6. Step 6: Final answer
    x = 401,821.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.