Home / 279,179,392.80-418,769,089.20-156,735,386.40

Finding the Fourth Proportional to 279,179,392.80, 418,769,089.20 and 156,735,386.40

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Solution

The fourth proportional to 279,179,392.80, 418,769,089.20 and 156,735,386.40 is: 235,103,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,179,392.80 : 418,769,089.20 = 156,735,386.40 : x
  2. Step 2: Convert to fraction form
    279,179,392.80/418,769,089.20 = 156,735,386.40/x
  3. Step 3: Cross multiply
    279,179,392.80x = 418,769,089.20 × 156,735,386.40
  4. Step 4: Simplify right side
    279,179,392.80x = 65,635,935,008,138,064
  5. Step 5: Solve for x
    x = 65,635,935,008,138,064/279,179,392.80
  6. Step 6: Final answer
    x = 235,103,079.60

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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.