Home / 279,936,020.40-419,904,030.60-257,828,074.80

Finding the Fourth Proportional to 279,936,020.40, 419,904,030.60 and 257,828,074.80

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Solution

The fourth proportional to 279,936,020.40, 419,904,030.60 and 257,828,074.80 is: 386,742,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,020.40 : 419,904,030.60 = 257,828,074.80 : x
  2. Step 2: Convert to fraction form
    279,936,020.40/419,904,030.60 = 257,828,074.80/x
  3. Step 3: Cross multiply
    279,936,020.40x = 419,904,030.60 × 257,828,074.80
  4. Step 4: Simplify right side
    279,936,020.40x = 108,263,047,810,358,304
  5. Step 5: Solve for x
    x = 108,263,047,810,358,304/279,936,020.40
  6. Step 6: Final answer
    x = 386,742,112.20

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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.