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Finding the Fourth Proportional to 220,480.98, 304,210.47 and 139,879.50

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Solution

The fourth proportional to 220,480.98, 304,210.47 and 139,879.50 is: 192,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,480.98 : 304,210.47 = 139,879.50 : x
  2. Step 2: Convert to fraction form
    220,480.98/304,210.47 = 139,879.50/x
  3. Step 3: Cross multiply
    220,480.98x = 304,210.47 × 139,879.50
  4. Step 4: Simplify right side
    220,480.98x = 42,552,808,438.37
  5. Step 5: Solve for x
    x = 42,552,808,438.37/220,480.98
  6. Step 6: Final answer
    x = 192,999.91

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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.