Home / 287,558,821.20-431,338,231.80-178,719,704.40

Finding the Fourth Proportional to 287,558,821.20, 431,338,231.80 and 178,719,704.40

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Solution

The fourth proportional to 287,558,821.20, 431,338,231.80 and 178,719,704.40 is: 268,079,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,558,821.20 : 431,338,231.80 = 178,719,704.40 : x
  2. Step 2: Convert to fraction form
    287,558,821.20/431,338,231.80 = 178,719,704.40/x
  3. Step 3: Cross multiply
    287,558,821.20x = 431,338,231.80 × 178,719,704.40
  4. Step 4: Simplify right side
    287,558,821.20x = 77,088,641,283,714,688
  5. Step 5: Solve for x
    x = 77,088,641,283,714,688/287,558,821.20
  6. Step 6: Final answer
    x = 268,079,556.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.