Home / 258,649,118.37-388,145,031.08-142,145,833.46

Finding the Fourth Proportional to 258,649,118.37, 388,145,031.08 and 142,145,833.46

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Solution

The fourth proportional to 258,649,118.37, 388,145,031.08 and 142,145,833.46 is: 213,312,920.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,649,118.37 : 388,145,031.08 = 142,145,833.46 : x
  2. Step 2: Convert to fraction form
    258,649,118.37/388,145,031.08 = 142,145,833.46/x
  3. Step 3: Cross multiply
    258,649,118.37x = 388,145,031.08 × 142,145,833.46
  4. Step 4: Simplify right side
    258,649,118.37x = 55,173,198,943,572,752
  5. Step 5: Solve for x
    x = 55,173,198,943,572,752/258,649,118.37
  6. Step 6: Final answer
    x = 213,312,920.96

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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.