Home / 278,782.47-384,721.65-151,458.03

Finding the Fourth Proportional to 278,782.47, 384,721.65 and 151,458.03

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Solution

The fourth proportional to 278,782.47, 384,721.65 and 151,458.03 is: 209,013.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,782.47 : 384,721.65 = 151,458.03 : x
  2. Step 2: Convert to fraction form
    278,782.47/384,721.65 = 151,458.03/x
  3. Step 3: Cross multiply
    278,782.47x = 384,721.65 × 151,458.03
  4. Step 4: Simplify right side
    278,782.47x = 58,269,183,207.35
  5. Step 5: Solve for x
    x = 58,269,183,207.35/278,782.47
  6. Step 6: Final answer
    x = 209,013.08

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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.