Home / 278,315.52-384,094.72-157,457.28

Finding the Fourth Proportional to 278,315.52, 384,094.72 and 157,457.28

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Solution

The fourth proportional to 278,315.52, 384,094.72 and 157,457.28 is: 217,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,315.52 : 384,094.72 = 157,457.28 : x
  2. Step 2: Convert to fraction form
    278,315.52/384,094.72 = 157,457.28/x
  3. Step 3: Cross multiply
    278,315.52x = 384,094.72 × 157,457.28
  4. Step 4: Simplify right side
    278,315.52x = 60,478,509,873.56
  5. Step 5: Solve for x
    x = 60,478,509,873.56/278,315.52
  6. Step 6: Final answer
    x = 217,301.97

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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.