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Finding the Fourth Proportional to 305,408.90, 421,576.18 and 184,554.74

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Solution

The fourth proportional to 305,408.90, 421,576.18 and 184,554.74 is: 254,753.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,408.90 : 421,576.18 = 184,554.74 : x
  2. Step 2: Convert to fraction form
    305,408.90/421,576.18 = 184,554.74/x
  3. Step 3: Cross multiply
    305,408.90x = 421,576.18 × 184,554.74
  4. Step 4: Simplify right side
    305,408.90x = 77,803,882,290.09
  5. Step 5: Solve for x
    x = 77,803,882,290.09/305,408.90
  6. Step 6: Final answer
    x = 254,753.16

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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.