Home / 217,431.63-299,777.90-140,815.35

Finding the Fourth Proportional to 217,431.63, 299,777.90 and 140,815.35

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Solution

The fourth proportional to 217,431.63, 299,777.90 and 140,815.35 is: 194,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,431.63 : 299,777.90 = 140,815.35 : x
  2. Step 2: Convert to fraction form
    217,431.63/299,777.90 = 140,815.35/x
  3. Step 3: Cross multiply
    217,431.63x = 299,777.90 × 140,815.35
  4. Step 4: Simplify right side
    217,431.63x = 42,213,329,206.69
  5. Step 5: Solve for x
    x = 42,213,329,206.69/217,431.63
  6. Step 6: Final answer
    x = 194,145.30

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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.