Home / 228,629,307.12-315,510,660.80-124,208,127.15

Finding the Fourth Proportional to 228,629,307.12, 315,510,660.80 and 124,208,127.15

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Solution

The fourth proportional to 228,629,307.12, 315,510,660.80 and 124,208,127.15 is: 171,408,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,629,307.12 : 315,510,660.80 = 124,208,127.15 : x
  2. Step 2: Convert to fraction form
    228,629,307.12/315,510,660.80 = 124,208,127.15/x
  3. Step 3: Cross multiply
    228,629,307.12x = 315,510,660.80 × 124,208,127.15
  4. Step 4: Simplify right side
    228,629,307.12x = 39,188,988,273,205,888
  5. Step 5: Solve for x
    x = 39,188,988,273,205,888/228,629,307.12
  6. Step 6: Final answer
    x = 171,408,419.89

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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.