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Finding the Fourth Proportional to 390,223.48, 585,335.37 and 109,740.73

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Solution

The fourth proportional to 390,223.48, 585,335.37 and 109,740.73 is: 164,611.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,223.48 : 585,335.37 = 109,740.73 : x
  2. Step 2: Convert to fraction form
    390,223.48/585,335.37 = 109,740.73/x
  3. Step 3: Cross multiply
    390,223.48x = 585,335.37 × 109,740.73
  4. Step 4: Simplify right side
    390,223.48x = 64,235,130,798.62
  5. Step 5: Solve for x
    x = 64,235,130,798.62/390,223.48
  6. Step 6: Final answer
    x = 164,611.14

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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.