Home / 380,975.12-570,961.24-212,574.68

Finding the Fourth Proportional to 380,975.12, 570,961.24 and 212,574.68

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Solution

The fourth proportional to 380,975.12, 570,961.24 and 212,574.68 is: 318,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,975.12 : 570,961.24 = 212,574.68 : x
  2. Step 2: Convert to fraction form
    380,975.12/570,961.24 = 212,574.68/x
  3. Step 3: Cross multiply
    380,975.12x = 570,961.24 × 212,574.68
  4. Step 4: Simplify right side
    380,975.12x = 121,371,902,885.40
  5. Step 5: Solve for x
    x = 121,371,902,885.40/380,975.12
  6. Step 6: Final answer
    x = 318,582.23

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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.