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Finding the Fourth Proportional to 217,007.70, 299,338.11 and 143,420.01

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Solution

The fourth proportional to 217,007.70, 299,338.11 and 143,420.01 is: 197,832.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,007.70 : 299,338.11 = 143,420.01 : x
  2. Step 2: Convert to fraction form
    217,007.70/299,338.11 = 143,420.01/x
  3. Step 3: Cross multiply
    217,007.70x = 299,338.11 × 143,420.01
  4. Step 4: Simplify right side
    217,007.70x = 42,931,074,729.58
  5. Step 5: Solve for x
    x = 42,931,074,729.58/217,007.70
  6. Step 6: Final answer
    x = 197,832.03

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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.