Home / 395,157.09-545,312.07-213,864.74

Finding the Fourth Proportional to 395,157.09, 545,312.07 and 213,864.74

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Solution

The fourth proportional to 395,157.09, 545,312.07 and 213,864.74 is: 295,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,157.09 : 545,312.07 = 213,864.74 : x
  2. Step 2: Convert to fraction form
    395,157.09/545,312.07 = 213,864.74/x
  3. Step 3: Cross multiply
    395,157.09x = 545,312.07 × 213,864.74
  4. Step 4: Simplify right side
    395,157.09x = 116,623,021,342.85
  5. Step 5: Solve for x
    x = 116,623,021,342.85/395,157.09
  6. Step 6: Final answer
    x = 295,130.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.