Home / 278,581.48-384,421.44-157,695.05

Finding the Fourth Proportional to 278,581.48, 384,421.44 and 157,695.05

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Solution

The fourth proportional to 278,581.48, 384,421.44 and 157,695.05 is: 217,607.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,581.48 : 384,421.44 = 157,695.05 : x
  2. Step 2: Convert to fraction form
    278,581.48/384,421.44 = 157,695.05/x
  3. Step 3: Cross multiply
    278,581.48x = 384,421.44 × 157,695.05
  4. Step 4: Simplify right side
    278,581.48x = 60,621,359,754.28
  5. Step 5: Solve for x
    x = 60,621,359,754.28/278,581.48
  6. Step 6: Final answer
    x = 217,607.29

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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.