Home / 219,990,931.36-329,935,204.20-81,881,581.24

Finding the Fourth Proportional to 219,990,931.36, 329,935,204.20 and 81,881,581.24

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Solution

The fourth proportional to 219,990,931.36, 329,935,204.20 and 81,881,581.24 is: 122,803,317.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,990,931.36 : 329,935,204.20 = 81,881,581.24 : x
  2. Step 2: Convert to fraction form
    219,990,931.36/329,935,204.20 = 81,881,581.24/x
  3. Step 3: Cross multiply
    219,990,931.36x = 329,935,204.20 × 81,881,581.24
  4. Step 4: Simplify right side
    219,990,931.36x = 27,015,616,226,638,288
  5. Step 5: Solve for x
    x = 27,015,616,226,638,288/219,990,931.36
  6. Step 6: Final answer
    x = 122,803,317.66

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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.