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Finding the Fourth Proportional to 380,903.51, 525,613.86 and 217,559.22

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Solution

The fourth proportional to 380,903.51, 525,613.86 and 217,559.22 is: 300,212.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,903.51 : 525,613.86 = 217,559.22 : x
  2. Step 2: Convert to fraction form
    380,903.51/525,613.86 = 217,559.22/x
  3. Step 3: Cross multiply
    380,903.51x = 525,613.86 × 217,559.22
  4. Step 4: Simplify right side
    380,903.51x = 114,352,139,431.74
  5. Step 5: Solve for x
    x = 114,352,139,431.74/380,903.51
  6. Step 6: Final answer
    x = 300,212.88

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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.