Home / 305,698,377.48-421,859,561.85-173,538,220.20

Finding the Fourth Proportional to 305,698,377.48, 421,859,561.85 and 173,538,220.20

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Solution

The fourth proportional to 305,698,377.48, 421,859,561.85 and 173,538,220.20 is: 239,480,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,698,377.48 : 421,859,561.85 = 173,538,220.20 : x
  2. Step 2: Convert to fraction form
    305,698,377.48/421,859,561.85 = 173,538,220.20/x
  3. Step 3: Cross multiply
    305,698,377.48x = 421,859,561.85 × 173,538,220.20
  4. Step 4: Simplify right side
    305,698,377.48x = 73,208,757,537,800,816
  5. Step 5: Solve for x
    x = 73,208,757,537,800,816/305,698,377.48
  6. Step 6: Final answer
    x = 239,480,360.16

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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.