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Finding the Fourth Proportional to 476,718.75, 657,871.88 and 261,862.40

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Solution

The fourth proportional to 476,718.75, 657,871.88 and 261,862.40 is: 361,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,718.75 : 657,871.88 = 261,862.40 : x
  2. Step 2: Convert to fraction form
    476,718.75/657,871.88 = 261,862.40/x
  3. Step 3: Cross multiply
    476,718.75x = 657,871.88 × 261,862.40
  4. Step 4: Simplify right side
    476,718.75x = 172,271,909,724.68
  5. Step 5: Solve for x
    x = 172,271,909,724.68/476,718.75
  6. Step 6: Final answer
    x = 361,370.12

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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.