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Finding the Fourth Proportional to 438,554.86, 658,000.56 and 154,274.93

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Solution

The fourth proportional to 438,554.86, 658,000.56 and 154,274.93 is: 231,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,554.86 : 658,000.56 = 154,274.93 : x
  2. Step 2: Convert to fraction form
    438,554.86/658,000.56 = 154,274.93/x
  3. Step 3: Cross multiply
    438,554.86x = 658,000.56 × 154,274.93
  4. Step 4: Simplify right side
    438,554.86x = 101,512,990,089.99
  5. Step 5: Solve for x
    x = 101,512,990,089.99/438,554.86
  6. Step 6: Final answer
    x = 231,471.59

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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.