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Finding the Fourth Proportional to 278,663.52, 384,558.48 and 151,341.60

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Solution

The fourth proportional to 278,663.52, 384,558.48 and 151,341.60 is: 208,852.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,663.52 : 384,558.48 = 151,341.60 : x
  2. Step 2: Convert to fraction form
    278,663.52/384,558.48 = 151,341.60/x
  3. Step 3: Cross multiply
    278,663.52x = 384,558.48 × 151,341.60
  4. Step 4: Simplify right side
    278,663.52x = 58,199,695,656.77
  5. Step 5: Solve for x
    x = 58,199,695,656.77/278,663.52
  6. Step 6: Final answer
    x = 208,852.94

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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.