Home / 219,821,186.56-329,732,916.80-128,881,002.72

Finding the Fourth Proportional to 219,821,186.56, 329,732,916.80 and 128,881,002.72

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Solution

The fourth proportional to 219,821,186.56, 329,732,916.80 and 128,881,002.72 is: 193,322,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,821,186.56 : 329,732,916.80 = 128,881,002.72 : x
  2. Step 2: Convert to fraction form
    219,821,186.56/329,732,916.80 = 128,881,002.72/x
  3. Step 3: Cross multiply
    219,821,186.56x = 329,732,916.80 × 128,881,002.72
  4. Step 4: Simplify right side
    219,821,186.56x = 42,496,308,946,974,336
  5. Step 5: Solve for x
    x = 42,496,308,946,974,336/219,821,186.56
  6. Step 6: Final answer
    x = 193,322,170.68

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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.