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Finding the Fourth Proportional to 220,271.40, 330,431.40 and 70,486.20

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Solution

The fourth proportional to 220,271.40, 330,431.40 and 70,486.20 is: 105,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,271.40 : 330,431.40 = 70,486.20 : x
  2. Step 2: Convert to fraction form
    220,271.40/330,431.40 = 70,486.20/x
  3. Step 3: Cross multiply
    220,271.40x = 330,431.40 × 70,486.20
  4. Step 4: Simplify right side
    220,271.40x = 23,290,853,746.68
  5. Step 5: Solve for x
    x = 23,290,853,746.68/220,271.40
  6. Step 6: Final answer
    x = 105,737.08

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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.