Home / 305,395,580.35-421,433,490.72-173,233,739.71

Finding the Fourth Proportional to 305,395,580.35, 421,433,490.72 and 173,233,739.71

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Solution

The fourth proportional to 305,395,580.35, 421,433,490.72 and 173,233,739.71 is: 239,055,521.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,395,580.35 : 421,433,490.72 = 173,233,739.71 : x
  2. Step 2: Convert to fraction form
    305,395,580.35/421,433,490.72 = 173,233,739.71/x
  3. Step 3: Cross multiply
    305,395,580.35x = 421,433,490.72 × 173,233,739.71
  4. Step 4: Simplify right side
    305,395,580.35x = 73,006,499,636,465,184
  5. Step 5: Solve for x
    x = 73,006,499,636,465,184/305,395,580.35
  6. Step 6: Final answer
    x = 239,055,521.21

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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.