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Finding the Fourth Proportional to 390,060.90, 585,091.35 and 224,172.90

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Solution

The fourth proportional to 390,060.90, 585,091.35 and 224,172.90 is: 336,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,060.90 : 585,091.35 = 224,172.90 : x
  2. Step 2: Convert to fraction form
    390,060.90/585,091.35 = 224,172.90/x
  3. Step 3: Cross multiply
    390,060.90x = 585,091.35 × 224,172.90
  4. Step 4: Simplify right side
    390,060.90x = 131,161,624,694.42
  5. Step 5: Solve for x
    x = 131,161,624,694.42/390,060.90
  6. Step 6: Final answer
    x = 336,259.35

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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.