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Finding the Fourth Proportional to 216,749.74, 299,118.95 and 130,708.30

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Solution

The fourth proportional to 216,749.74, 299,118.95 and 130,708.30 is: 180,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,749.74 : 299,118.95 = 130,708.30 : x
  2. Step 2: Convert to fraction form
    216,749.74/299,118.95 = 130,708.30/x
  3. Step 3: Cross multiply
    216,749.74x = 299,118.95 × 130,708.30
  4. Step 4: Simplify right side
    216,749.74x = 39,097,329,452.29
  5. Step 5: Solve for x
    x = 39,097,329,452.29/216,749.74
  6. Step 6: Final answer
    x = 180,380.05

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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.