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Finding the Fourth Proportional to 221,501.51, 305,565.71 and 144,986.88

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Solution

The fourth proportional to 221,501.51, 305,565.71 and 144,986.88 is: 200,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,501.51 : 305,565.71 = 144,986.88 : x
  2. Step 2: Convert to fraction form
    221,501.51/305,565.71 = 144,986.88/x
  3. Step 3: Cross multiply
    221,501.51x = 305,565.71 × 144,986.88
  4. Step 4: Simplify right side
    221,501.51x = 44,303,018,202.95
  5. Step 5: Solve for x
    x = 44,303,018,202.95/221,501.51
  6. Step 6: Final answer
    x = 200,012.27

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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.