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Finding the Fourth Proportional to 213,616.70, 320,425.05 and 103,024.70

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Solution

The fourth proportional to 213,616.70, 320,425.05 and 103,024.70 is: 154,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,616.70 : 320,425.05 = 103,024.70 : x
  2. Step 2: Convert to fraction form
    213,616.70/320,425.05 = 103,024.70/x
  3. Step 3: Cross multiply
    213,616.70x = 320,425.05 × 103,024.70
  4. Step 4: Simplify right side
    213,616.70x = 33,011,694,648.74
  5. Step 5: Solve for x
    x = 33,011,694,648.74/213,616.70
  6. Step 6: Final answer
    x = 154,537.05

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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.