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Finding the Fourth Proportional to 213,157.99, 319,667.73 and 70,965.06

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Solution

The fourth proportional to 213,157.99, 319,667.73 and 70,965.06 is: 106,424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,157.99 : 319,667.73 = 70,965.06 : x
  2. Step 2: Convert to fraction form
    213,157.99/319,667.73 = 70,965.06/x
  3. Step 3: Cross multiply
    213,157.99x = 319,667.73 × 70,965.06
  4. Step 4: Simplify right side
    213,157.99x = 22,685,239,639.51
  5. Step 5: Solve for x
    x = 22,685,239,639.51/213,157.99
  6. Step 6: Final answer
    x = 106,424.53

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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.