Home / 257,282,256.28-355,049,243.56-139,807,307.06

Finding the Fourth Proportional to 257,282,256.28, 355,049,243.56 and 139,807,307.06

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Solution

The fourth proportional to 257,282,256.28, 355,049,243.56 and 139,807,307.06 is: 192,933,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,282,256.28 : 355,049,243.56 = 139,807,307.06 : x
  2. Step 2: Convert to fraction form
    257,282,256.28/355,049,243.56 = 139,807,307.06/x
  3. Step 3: Cross multiply
    257,282,256.28x = 355,049,243.56 × 139,807,307.06
  4. Step 4: Simplify right side
    257,282,256.28x = 49,638,478,615,813,648
  5. Step 5: Solve for x
    x = 49,638,478,615,813,648/257,282,256.28
  6. Step 6: Final answer
    x = 192,933,936.97

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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.