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Finding the Fourth Proportional to 486,143.63, 670,878.34 and 268,352.43

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Solution

The fourth proportional to 486,143.63, 670,878.34 and 268,352.43 is: 370,326.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,143.63 : 670,878.34 = 268,352.43 : x
  2. Step 2: Convert to fraction form
    486,143.63/670,878.34 = 268,352.43/x
  3. Step 3: Cross multiply
    486,143.63x = 670,878.34 × 268,352.43
  4. Step 4: Simplify right side
    486,143.63x = 180,031,833,360.38
  5. Step 5: Solve for x
    x = 180,031,833,360.38/486,143.63
  6. Step 6: Final answer
    x = 370,326.43

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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.