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Finding the Fourth Proportional to 328,988.70, 492,705.45 and 223,235.10

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Solution

The fourth proportional to 328,988.70, 492,705.45 and 223,235.10 is: 334,325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,988.70 : 492,705.45 = 223,235.10 : x
  2. Step 2: Convert to fraction form
    328,988.70/492,705.45 = 223,235.10/x
  3. Step 3: Cross multiply
    328,988.70x = 492,705.45 × 223,235.10
  4. Step 4: Simplify right side
    328,988.70x = 109,989,150,401.30
  5. Step 5: Solve for x
    x = 109,989,150,401.30/328,988.70
  6. Step 6: Final answer
    x = 334,325.01

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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.