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Finding the Fourth Proportional to 485,716.10, 670,291.13 and 270,869.74

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Solution

The fourth proportional to 485,716.10, 670,291.13 and 270,869.74 is: 373,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,716.10 : 670,291.13 = 270,869.74 : x
  2. Step 2: Convert to fraction form
    485,716.10/670,291.13 = 270,869.74/x
  3. Step 3: Cross multiply
    485,716.10x = 670,291.13 × 270,869.74
  4. Step 4: Simplify right side
    485,716.10x = 181,561,583,108.85
  5. Step 5: Solve for x
    x = 181,561,583,108.85/485,716.10
  6. Step 6: Final answer
    x = 373,801.87

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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.