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Finding the Fourth Proportional to 303,783.59, 455,669.74 and 90,695.98

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Solution

The fourth proportional to 303,783.59, 455,669.74 and 90,695.98 is: 136,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,783.59 : 455,669.74 = 90,695.98 : x
  2. Step 2: Convert to fraction form
    303,783.59/455,669.74 = 90,695.98/x
  3. Step 3: Cross multiply
    303,783.59x = 455,669.74 × 90,695.98
  4. Step 4: Simplify right side
    303,783.59x = 41,327,411,235.30
  5. Step 5: Solve for x
    x = 41,327,411,235.30/303,783.59
  6. Step 6: Final answer
    x = 136,042.28

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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.