Home / 276,312,728.07-381,345,005.05-157,264,266.76

Finding the Fourth Proportional to 276,312,728.07, 381,345,005.05 and 157,264,266.76

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Solution

The fourth proportional to 276,312,728.07, 381,345,005.05 and 157,264,266.76 is: 217,043,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,312,728.07 : 381,345,005.05 = 157,264,266.76 : x
  2. Step 2: Convert to fraction form
    276,312,728.07/381,345,005.05 = 157,264,266.76/x
  3. Step 3: Cross multiply
    276,312,728.07x = 381,345,005.05 × 157,264,266.76
  4. Step 4: Simplify right side
    276,312,728.07x = 59,971,942,600,873,712
  5. Step 5: Solve for x
    x = 59,971,942,600,873,712/276,312,728.07
  6. Step 6: Final answer
    x = 217,043,720.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.