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Finding the Fourth Proportional to 284,390.70, 426,586.04 and 84,705.89

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Solution

The fourth proportional to 284,390.70, 426,586.04 and 84,705.89 is: 127,058.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,390.70 : 426,586.04 = 84,705.89 : x
  2. Step 2: Convert to fraction form
    284,390.70/426,586.04 = 84,705.89/x
  3. Step 3: Cross multiply
    284,390.70x = 426,586.04 × 84,705.89
  4. Step 4: Simplify right side
    284,390.70x = 36,134,350,816.98
  5. Step 5: Solve for x
    x = 36,134,350,816.98/284,390.70
  6. Step 6: Final answer
    x = 127,058.84

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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.