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Finding the Fourth Proportional to 351,279.93, 484,583.70 and 215,345.73

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Solution

The fourth proportional to 351,279.93, 484,583.70 and 215,345.73 is: 297,065.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,279.93 : 484,583.70 = 215,345.73 : x
  2. Step 2: Convert to fraction form
    351,279.93/484,583.70 = 215,345.73/x
  3. Step 3: Cross multiply
    351,279.93x = 484,583.70 × 215,345.73
  4. Step 4: Simplify right side
    351,279.93x = 104,353,030,622.60
  5. Step 5: Solve for x
    x = 104,353,030,622.60/351,279.93
  6. Step 6: Final answer
    x = 297,065.17

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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.