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Finding the Fourth Proportional to 390,175.58, 585,220.80 and 264,622.34

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Solution

The fourth proportional to 390,175.58, 585,220.80 and 264,622.34 is: 396,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,175.58 : 585,220.80 = 264,622.34 : x
  2. Step 2: Convert to fraction form
    390,175.58/585,220.80 = 264,622.34/x
  3. Step 3: Cross multiply
    390,175.58x = 585,220.80 × 264,622.34
  4. Step 4: Simplify right side
    390,175.58x = 154,862,497,512.67
  5. Step 5: Solve for x
    x = 154,862,497,512.67/390,175.58
  6. Step 6: Final answer
    x = 396,904.64

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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.