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Finding the Fourth Proportional to 476,228.94, 657,203.96 and 261,389

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Solution

The fourth proportional to 476,228.94, 657,203.96 and 261,389 is: 360,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,228.94 : 657,203.96 = 261,389 : x
  2. Step 2: Convert to fraction form
    476,228.94/657,203.96 = 261,389/x
  3. Step 3: Cross multiply
    476,228.94x = 657,203.96 × 261,389
  4. Step 4: Simplify right side
    476,228.94x = 171,785,885,900.44
  5. Step 5: Solve for x
    x = 171,785,885,900.44/476,228.94
  6. Step 6: Final answer
    x = 360,721.22

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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.