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Finding the Fourth Proportional to 217,315.44, 299,980.26 and 145,669.32

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Solution

The fourth proportional to 217,315.44, 299,980.26 and 145,669.32 is: 201,080.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,315.44 : 299,980.26 = 145,669.32 : x
  2. Step 2: Convert to fraction form
    217,315.44/299,980.26 = 145,669.32/x
  3. Step 3: Cross multiply
    217,315.44x = 299,980.26 × 145,669.32
  4. Step 4: Simplify right side
    217,315.44x = 43,697,920,487.62
  5. Step 5: Solve for x
    x = 43,697,920,487.62/217,315.44
  6. Step 6: Final answer
    x = 201,080.61

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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.