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Finding the Fourth Proportional to 368,267.40, 552,401.10 and 309,218.40

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Solution

The fourth proportional to 368,267.40, 552,401.10 and 309,218.40 is: 463,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,267.40 : 552,401.10 = 309,218.40 : x
  2. Step 2: Convert to fraction form
    368,267.40/552,401.10 = 309,218.40/x
  3. Step 3: Cross multiply
    368,267.40x = 552,401.10 × 309,218.40
  4. Step 4: Simplify right side
    368,267.40x = 170,812,584,300.24
  5. Step 5: Solve for x
    x = 170,812,584,300.24/368,267.40
  6. Step 6: Final answer
    x = 463,827.60

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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.