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Finding the Fourth Proportional to 390,860.38, 585,504.32 and 296,252.38

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Solution

The fourth proportional to 390,860.38, 585,504.32 and 296,252.38 is: 443,782.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,860.38 : 585,504.32 = 296,252.38 : x
  2. Step 2: Convert to fraction form
    390,860.38/585,504.32 = 296,252.38/x
  3. Step 3: Cross multiply
    390,860.38x = 585,504.32 × 296,252.38
  4. Step 4: Simplify right side
    390,860.38x = 173,457,048,300.28
  5. Step 5: Solve for x
    x = 173,457,048,300.28/390,860.38
  6. Step 6: Final answer
    x = 443,782.63

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1.5x scale

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.