Home / 221,011.83-305,032.89-130,389.93

Finding the Fourth Proportional to 221,011.83, 305,032.89 and 130,389.93

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Solution

The fourth proportional to 221,011.83, 305,032.89 and 130,389.93 is: 179,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,011.83 : 305,032.89 = 130,389.93 : x
  2. Step 2: Convert to fraction form
    221,011.83/305,032.89 = 130,389.93/x
  3. Step 3: Cross multiply
    221,011.83x = 305,032.89 × 130,389.93
  4. Step 4: Simplify right side
    221,011.83x = 39,773,217,174.80
  5. Step 5: Solve for x
    x = 39,773,217,174.80/221,011.83
  6. Step 6: Final answer
    x = 179,959.68

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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.