Home / 278,838.18-384,795.92-151,513.78

Finding the Fourth Proportional to 278,838.18, 384,795.92 and 151,513.78

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Solution

The fourth proportional to 278,838.18, 384,795.92 and 151,513.78 is: 209,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,838.18 : 384,795.92 = 151,513.78 : x
  2. Step 2: Convert to fraction form
    278,838.18/384,795.92 = 151,513.78/x
  3. Step 3: Cross multiply
    278,838.18x = 384,795.92 × 151,513.78
  4. Step 4: Simplify right side
    278,838.18x = 58,301,884,367.78
  5. Step 5: Solve for x
    x = 58,301,884,367.78/278,838.18
  6. Step 6: Final answer
    x = 209,088.60

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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.