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Finding the Fourth Proportional to 220,513.67, 304,402.01 and 148,990.60

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Solution

The fourth proportional to 220,513.67, 304,402.01 and 148,990.60 is: 205,669.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,513.67 : 304,402.01 = 148,990.60 : x
  2. Step 2: Convert to fraction form
    220,513.67/304,402.01 = 148,990.60/x
  3. Step 3: Cross multiply
    220,513.67x = 304,402.01 × 148,990.60
  4. Step 4: Simplify right side
    220,513.67x = 45,353,038,111.11
  5. Step 5: Solve for x
    x = 45,353,038,111.11/220,513.67
  6. Step 6: Final answer
    x = 205,669.96

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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.