Home / 389,270.81-537,209.34-217,203.81

Finding the Fourth Proportional to 389,270.81, 537,209.34 and 217,203.81

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Solution

The fourth proportional to 389,270.81, 537,209.34 and 217,203.81 is: 299,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,270.81 : 537,209.34 = 217,203.81 : x
  2. Step 2: Convert to fraction form
    389,270.81/537,209.34 = 217,203.81/x
  3. Step 3: Cross multiply
    389,270.81x = 537,209.34 × 217,203.81
  4. Step 4: Simplify right side
    389,270.81x = 116,683,915,415.59
  5. Step 5: Solve for x
    x = 116,683,915,415.59/389,270.81
  6. Step 6: Final answer
    x = 299,749.97

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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.