Home / 278,781.47-384,720.27-151,457.03

Finding the Fourth Proportional to 278,781.47, 384,720.27 and 151,457.03

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Solution

The fourth proportional to 278,781.47, 384,720.27 and 151,457.03 is: 209,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781.47 : 384,720.27 = 151,457.03 : x
  2. Step 2: Convert to fraction form
    278,781.47/384,720.27 = 151,457.03/x
  3. Step 3: Cross multiply
    278,781.47x = 384,720.27 × 151,457.03
  4. Step 4: Simplify right side
    278,781.47x = 58,268,589,475.00
  5. Step 5: Solve for x
    x = 58,268,589,475.00/278,781.47
  6. Step 6: Final answer
    x = 209,011.70

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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.