Home / 221,666,728.40-305,909,532.36-123,881,581.52

Finding the Fourth Proportional to 221,666,728.40, 305,909,532.36 and 123,881,581.52

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Solution

The fourth proportional to 221,666,728.40, 305,909,532.36 and 123,881,581.52 is: 170,961,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,666,728.40 : 305,909,532.36 = 123,881,581.52 : x
  2. Step 2: Convert to fraction form
    221,666,728.40/305,909,532.36 = 123,881,581.52/x
  3. Step 3: Cross multiply
    221,666,728.40x = 305,909,532.36 × 123,881,581.52
  4. Step 4: Simplify right side
    221,666,728.40x = 37,896,556,670,800,416
  5. Step 5: Solve for x
    x = 37,896,556,670,800,416/221,666,728.40
  6. Step 6: Final answer
    x = 170,961,862.18

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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.