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Finding the Fourth Proportional to 220,628.60, 328,447.93 and 219,316.40

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Solution

The fourth proportional to 220,628.60, 328,447.93 and 219,316.40 is: 326,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,628.60 : 328,447.93 = 219,316.40 : x
  2. Step 2: Convert to fraction form
    220,628.60/328,447.93 = 219,316.40/x
  3. Step 3: Cross multiply
    220,628.60x = 328,447.93 × 219,316.40
  4. Step 4: Simplify right side
    220,628.60x = 72,034,017,595.05
  5. Step 5: Solve for x
    x = 72,034,017,595.05/220,628.60
  6. Step 6: Final answer
    x = 326,494.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.