Home / 205,331.40-307,997.10-72,210.60

Finding the Fourth Proportional to 205,331.40, 307,997.10 and 72,210.60

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Solution

The fourth proportional to 205,331.40, 307,997.10 and 72,210.60 is: 108,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,331.40 : 307,997.10 = 72,210.60 : x
  2. Step 2: Convert to fraction form
    205,331.40/307,997.10 = 72,210.60/x
  3. Step 3: Cross multiply
    205,331.40x = 307,997.10 × 72,210.60
  4. Step 4: Simplify right side
    205,331.40x = 22,240,655,389.26
  5. Step 5: Solve for x
    x = 22,240,655,389.26/205,331.40
  6. Step 6: Final answer
    x = 108,315.90

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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.