Home / 278,781,659.48-385,112,098.14-223,395,009.68

Finding the Fourth Proportional to 278,781,659.48, 385,112,098.14 and 223,395,009.68

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Solution

The fourth proportional to 278,781,659.48, 385,112,098.14 and 223,395,009.68 is: 308,600,361.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781,659.48 : 385,112,098.14 = 223,395,009.68 : x
  2. Step 2: Convert to fraction form
    278,781,659.48/385,112,098.14 = 223,395,009.68/x
  3. Step 3: Cross multiply
    278,781,659.48x = 385,112,098.14 × 223,395,009.68
  4. Step 4: Simplify right side
    278,781,659.48x = 86,032,120,891,870,416
  5. Step 5: Solve for x
    x = 86,032,120,891,870,416/278,781,659.48
  6. Step 6: Final answer
    x = 308,600,361.49

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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.