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Finding the Fourth Proportional to 390,559, 585,838.62 and 95,071

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Solution

The fourth proportional to 390,559, 585,838.62 and 95,071 is: 142,606.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,559 : 585,838.62 = 95,071 : x
  2. Step 2: Convert to fraction form
    390,559/585,838.62 = 95,071/x
  3. Step 3: Cross multiply
    390,559x = 585,838.62 × 95,071
  4. Step 4: Simplify right side
    390,559x = 55,696,263,442.02
  5. Step 5: Solve for x
    x = 55,696,263,442.02/390,559
  6. Step 6: Final answer
    x = 142,606.53

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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.