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Finding the Fourth Proportional to 355,052.88, 489,648.39 and 277,538.76

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Solution

The fourth proportional to 355,052.88, 489,648.39 and 277,538.76 is: 382,749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,052.88 : 489,648.39 = 277,538.76 : x
  2. Step 2: Convert to fraction form
    355,052.88/489,648.39 = 277,538.76/x
  3. Step 3: Cross multiply
    355,052.88x = 489,648.39 × 277,538.76
  4. Step 4: Simplify right side
    355,052.88x = 135,896,406,996.60
  5. Step 5: Solve for x
    x = 135,896,406,996.60/355,052.88
  6. Step 6: Final answer
    x = 382,749.77

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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.