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Finding the Fourth Proportional to 220,354.95, 330,532.54 and 145,457.59

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Solution

The fourth proportional to 220,354.95, 330,532.54 and 145,457.59 is: 218,186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,354.95 : 330,532.54 = 145,457.59 : x
  2. Step 2: Convert to fraction form
    220,354.95/330,532.54 = 145,457.59/x
  3. Step 3: Cross multiply
    220,354.95x = 330,532.54 × 145,457.59
  4. Step 4: Simplify right side
    220,354.95x = 48,078,466,684.98
  5. Step 5: Solve for x
    x = 48,078,466,684.98/220,354.95
  6. Step 6: Final answer
    x = 218,186.46

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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.