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Finding the Fourth Proportional to 278,696.68, 384,602.52 and 151,374.40

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Solution

The fourth proportional to 278,696.68, 384,602.52 and 151,374.40 is: 208,897.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,696.68 : 384,602.52 = 151,374.40 : x
  2. Step 2: Convert to fraction form
    278,696.68/384,602.52 = 151,374.40/x
  3. Step 3: Cross multiply
    278,696.68x = 384,602.52 × 151,374.40
  4. Step 4: Simplify right side
    278,696.68x = 58,218,975,703.49
  5. Step 5: Solve for x
    x = 58,218,975,703.49/278,696.68
  6. Step 6: Final answer
    x = 208,897.27

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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.