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Finding the Fourth Proportional to 485,800.17, 670,405.42 and 270,954.15

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Solution

The fourth proportional to 485,800.17, 670,405.42 and 270,954.15 is: 373,917.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,800.17 : 670,405.42 = 270,954.15 : x
  2. Step 2: Convert to fraction form
    485,800.17/670,405.42 = 270,954.15/x
  3. Step 3: Cross multiply
    485,800.17x = 670,405.42 × 270,954.15
  4. Step 4: Simplify right side
    485,800.17x = 181,649,130,731.49
  5. Step 5: Solve for x
    x = 181,649,130,731.49/485,800.17
  6. Step 6: Final answer
    x = 373,917.39

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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.