Home / 278,781,657.48-385,112,095.38-223,395,007.68

Finding the Fourth Proportional to 278,781,657.48, 385,112,095.38 and 223,395,007.68

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Solution

The fourth proportional to 278,781,657.48, 385,112,095.38 and 223,395,007.68 is: 308,600,358.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781,657.48 : 385,112,095.38 = 223,395,007.68 : x
  2. Step 2: Convert to fraction form
    278,781,657.48/385,112,095.38 = 223,395,007.68/x
  3. Step 3: Cross multiply
    278,781,657.48x = 385,112,095.38 × 223,395,007.68
  4. Step 4: Simplify right side
    278,781,657.48x = 86,032,119,505,076,000
  5. Step 5: Solve for x
    x = 86,032,119,505,076,000/278,781,657.48
  6. Step 6: Final answer
    x = 308,600,358.73

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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.