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Finding the Fourth Proportional to 285,385.44, 393,827.08 and 158,058.30

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Solution

The fourth proportional to 285,385.44, 393,827.08 and 158,058.30 is: 218,117.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,385.44 : 393,827.08 = 158,058.30 : x
  2. Step 2: Convert to fraction form
    285,385.44/393,827.08 = 158,058.30/x
  3. Step 3: Cross multiply
    285,385.44x = 393,827.08 × 158,058.30
  4. Step 4: Simplify right side
    285,385.44x = 62,247,637,379.05
  5. Step 5: Solve for x
    x = 62,247,637,379.05/285,385.44
  6. Step 6: Final answer
    x = 218,117.78

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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.