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Finding the Fourth Proportional to 221,705.32, 305,862.72 and 163,701.08

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Solution

The fourth proportional to 221,705.32, 305,862.72 and 163,701.08 is: 225,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,705.32 : 305,862.72 = 163,701.08 : x
  2. Step 2: Convert to fraction form
    221,705.32/305,862.72 = 163,701.08/x
  3. Step 3: Cross multiply
    221,705.32x = 305,862.72 × 163,701.08
  4. Step 4: Simplify right side
    221,705.32x = 50,070,057,595.74
  5. Step 5: Solve for x
    x = 50,070,057,595.74/221,705.32
  6. Step 6: Final answer
    x = 225,840.58

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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.