Home / 386,178,680.40-579,268,020.60-222,920,005.20

Finding the Fourth Proportional to 386,178,680.40, 579,268,020.60 and 222,920,005.20

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Solution

The fourth proportional to 386,178,680.40, 579,268,020.60 and 222,920,005.20 is: 334,380,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,178,680.40 : 579,268,020.60 = 222,920,005.20 : x
  2. Step 2: Convert to fraction form
    386,178,680.40/579,268,020.60 = 222,920,005.20/x
  3. Step 3: Cross multiply
    386,178,680.40x = 579,268,020.60 × 222,920,005.20
  4. Step 4: Simplify right side
    386,178,680.40x = 129,130,430,164,345,712
  5. Step 5: Solve for x
    x = 129,130,430,164,345,712/386,178,680.40
  6. Step 6: Final answer
    x = 334,380,007.80

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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.