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Finding the Fourth Proportional to 310,543.80, 465,815.70 and 276,718.20

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Solution

The fourth proportional to 310,543.80, 465,815.70 and 276,718.20 is: 415,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,543.80 : 465,815.70 = 276,718.20 : x
  2. Step 2: Convert to fraction form
    310,543.80/465,815.70 = 276,718.20/x
  3. Step 3: Cross multiply
    310,543.80x = 465,815.70 × 276,718.20
  4. Step 4: Simplify right side
    310,543.80x = 128,899,682,035.74
  5. Step 5: Solve for x
    x = 128,899,682,035.74/310,543.80
  6. Step 6: Final answer
    x = 415,077.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.