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Finding the Fourth Proportional to 390,038, 585,057 and 94,550

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Solution

The fourth proportional to 390,038, 585,057 and 94,550 is: 141,825

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,038 : 585,057 = 94,550 : x
  2. Step 2: Convert to fraction form
    390,038/585,057 = 94,550/x
  3. Step 3: Cross multiply
    390,038x = 585,057 × 94,550
  4. Step 4: Simplify right side
    390,038x = 55,317,139,350
  5. Step 5: Solve for x
    x = 55,317,139,350/390,038
  6. Step 6: Final answer
    x = 141,825

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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.