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Finding the Fourth Proportional to 390,942.40, 585,659.04 and 233,296.96

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Solution

The fourth proportional to 390,942.40, 585,659.04 and 233,296.96 is: 349,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,942.40 : 585,659.04 = 233,296.96 : x
  2. Step 2: Convert to fraction form
    390,942.40/585,659.04 = 233,296.96/x
  3. Step 3: Cross multiply
    390,942.40x = 585,659.04 × 233,296.96
  4. Step 4: Simplify right side
    390,942.40x = 136,632,473,628.52
  5. Step 5: Solve for x
    x = 136,632,473,628.52/390,942.40
  6. Step 6: Final answer
    x = 349,495.15

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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.