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Finding the Fourth Proportional to 390,624.40, 585,936.60 and 233,160.40

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Solution

The fourth proportional to 390,624.40, 585,936.60 and 233,160.40 is: 349,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,624.40 : 585,936.60 = 233,160.40 : x
  2. Step 2: Convert to fraction form
    390,624.40/585,936.60 = 233,160.40/x
  3. Step 3: Cross multiply
    390,624.40x = 585,936.60 × 233,160.40
  4. Step 4: Simplify right side
    390,624.40x = 136,617,212,030.64
  5. Step 5: Solve for x
    x = 136,617,212,030.64/390,624.40
  6. Step 6: Final answer
    x = 349,740.60

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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.