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Finding the Fourth Proportional to 309,529.98, 427,169.16 and 173,607.53

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Solution

The fourth proportional to 309,529.98, 427,169.16 and 173,607.53 is: 239,588.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,529.98 : 427,169.16 = 173,607.53 : x
  2. Step 2: Convert to fraction form
    309,529.98/427,169.16 = 173,607.53/x
  3. Step 3: Cross multiply
    309,529.98x = 427,169.16 × 173,607.53
  4. Step 4: Simplify right side
    309,529.98x = 74,159,780,623.93
  5. Step 5: Solve for x
    x = 74,159,780,623.93/309,529.98
  6. Step 6: Final answer
    x = 239,588.36

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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.