Home / 279,936,752.40-419,905,128.60-257,828,806.80

Finding the Fourth Proportional to 279,936,752.40, 419,905,128.60 and 257,828,806.80

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Solution

The fourth proportional to 279,936,752.40, 419,905,128.60 and 257,828,806.80 is: 386,743,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,752.40 : 419,905,128.60 = 257,828,806.80 : x
  2. Step 2: Convert to fraction form
    279,936,752.40/419,905,128.60 = 257,828,806.80/x
  3. Step 3: Cross multiply
    279,936,752.40x = 419,905,128.60 × 257,828,806.80
  4. Step 4: Simplify right side
    279,936,752.40x = 108,263,638,276,138,560
  5. Step 5: Solve for x
    x = 108,263,638,276,138,560/279,936,752.40
  6. Step 6: Final answer
    x = 386,743,210.20

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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.