Home / 380,445.37-570,878.09-212,060.51

Finding the Fourth Proportional to 380,445.37, 570,878.09 and 212,060.51

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Solution

The fourth proportional to 380,445.37, 570,878.09 and 212,060.51 is: 318,207.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,445.37 : 570,878.09 = 212,060.51 : x
  2. Step 2: Convert to fraction form
    380,445.37/570,878.09 = 212,060.51/x
  3. Step 3: Cross multiply
    380,445.37x = 570,878.09 × 212,060.51
  4. Step 4: Simplify right side
    380,445.37x = 121,060,699,127.39
  5. Step 5: Solve for x
    x = 121,060,699,127.39/380,445.37
  6. Step 6: Final answer
    x = 318,207.84

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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.