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Finding the Fourth Proportional to 220,443.60, 330,402.88 and 153,521.40

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Solution

The fourth proportional to 220,443.60, 330,402.88 and 153,521.40 is: 230,099.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,443.60 : 330,402.88 = 153,521.40 : x
  2. Step 2: Convert to fraction form
    220,443.60/330,402.88 = 153,521.40/x
  3. Step 3: Cross multiply
    220,443.60x = 330,402.88 × 153,521.40
  4. Step 4: Simplify right side
    220,443.60x = 50,723,912,701.63
  5. Step 5: Solve for x
    x = 50,723,912,701.63/220,443.60
  6. Step 6: Final answer
    x = 230,099.28

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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.