Home / 279,936,242.40-419,904,363.60-257,828,296.80

Finding the Fourth Proportional to 279,936,242.40, 419,904,363.60 and 257,828,296.80

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Solution

The fourth proportional to 279,936,242.40, 419,904,363.60 and 257,828,296.80 is: 386,742,445.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,242.40 : 419,904,363.60 = 257,828,296.80 : x
  2. Step 2: Convert to fraction form
    279,936,242.40/419,904,363.60 = 257,828,296.80/x
  3. Step 3: Cross multiply
    279,936,242.40x = 419,904,363.60 × 257,828,296.80
  4. Step 4: Simplify right side
    279,936,242.40x = 108,263,226,885,875,920
  5. Step 5: Solve for x
    x = 108,263,226,885,875,920/279,936,242.40
  6. Step 6: Final answer
    x = 386,742,445.20

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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.