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Finding the Fourth Proportional to 217,429.64, 300,056.10 and 126,783.08

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Solution

The fourth proportional to 217,429.64, 300,056.10 and 126,783.08 is: 174,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,429.64 : 300,056.10 = 126,783.08 : x
  2. Step 2: Convert to fraction form
    217,429.64/300,056.10 = 126,783.08/x
  3. Step 3: Cross multiply
    217,429.64x = 300,056.10 × 126,783.08
  4. Step 4: Simplify right side
    217,429.64x = 38,042,036,530.79
  5. Step 5: Solve for x
    x = 38,042,036,530.79/217,429.64
  6. Step 6: Final answer
    x = 174,962.51

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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.