Home / 289,036,872.72-398,871,179.55-156,877,896.48

Finding the Fourth Proportional to 289,036,872.72, 398,871,179.55 and 156,877,896.48

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Solution

The fourth proportional to 289,036,872.72, 398,871,179.55 and 156,877,896.48 is: 216,491,657.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,036,872.72 : 398,871,179.55 = 156,877,896.48 : x
  2. Step 2: Convert to fraction form
    289,036,872.72/398,871,179.55 = 156,877,896.48/x
  3. Step 3: Cross multiply
    289,036,872.72x = 398,871,179.55 × 156,877,896.48
  4. Step 4: Simplify right side
    289,036,872.72x = 62,574,071,614,300,392
  5. Step 5: Solve for x
    x = 62,574,071,614,300,392/289,036,872.72
  6. Step 6: Final answer
    x = 216,491,657.36

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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.