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Finding the Fourth Proportional to 351,278, 484,631.32 and 230,485.96

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Solution

The fourth proportional to 351,278, 484,631.32 and 230,485.96 is: 317,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,278 : 484,631.32 = 230,485.96 : x
  2. Step 2: Convert to fraction form
    351,278/484,631.32 = 230,485.96/x
  3. Step 3: Cross multiply
    351,278x = 484,631.32 × 230,485.96
  4. Step 4: Simplify right side
    351,278x = 111,700,715,036.27
  5. Step 5: Solve for x
    x = 111,700,715,036.27/351,278
  6. Step 6: Final answer
    x = 317,983.80

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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.