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Finding the Fourth Proportional to 285,553.86, 428,237.36 and 133,703.93

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Solution

The fourth proportional to 285,553.86, 428,237.36 and 133,703.93 is: 200,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,553.86 : 428,237.36 = 133,703.93 : x
  2. Step 2: Convert to fraction form
    285,553.86/428,237.36 = 133,703.93/x
  3. Step 3: Cross multiply
    285,553.86x = 428,237.36 × 133,703.93
  4. Step 4: Simplify right side
    285,553.86x = 57,257,018,004.82
  5. Step 5: Solve for x
    x = 57,257,018,004.82/285,553.86
  6. Step 6: Final answer
    x = 200,512.15

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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.