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Finding the Fourth Proportional to 320,401.72, 480,613.74 and 110,038.12

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Solution

The fourth proportional to 320,401.72, 480,613.74 and 110,038.12 is: 165,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,401.72 : 480,613.74 = 110,038.12 : x
  2. Step 2: Convert to fraction form
    320,401.72/480,613.74 = 110,038.12/x
  3. Step 3: Cross multiply
    320,401.72x = 480,613.74 × 110,038.12
  4. Step 4: Simplify right side
    320,401.72x = 52,885,832,395.77
  5. Step 5: Solve for x
    x = 52,885,832,395.77/320,401.72
  6. Step 6: Final answer
    x = 165,061.01

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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.