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Finding the Fourth Proportional to 303,616.70, 455,425.05 and 214,970.30

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Solution

The fourth proportional to 303,616.70, 455,425.05 and 214,970.30 is: 322,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,616.70 : 455,425.05 = 214,970.30 : x
  2. Step 2: Convert to fraction form
    303,616.70/455,425.05 = 214,970.30/x
  3. Step 3: Cross multiply
    303,616.70x = 455,425.05 × 214,970.30
  4. Step 4: Simplify right side
    303,616.70x = 97,902,859,626.02
  5. Step 5: Solve for x
    x = 97,902,859,626.02/303,616.70
  6. Step 6: Final answer
    x = 322,455.45

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1.5x scale

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.