Home / 258,458.24-388,130.22-140,360.24

Finding the Fourth Proportional to 258,458.24, 388,130.22 and 140,360.24

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Solution

The fourth proportional to 258,458.24, 388,130.22 and 140,360.24 is: 210,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,458.24 : 388,130.22 = 140,360.24 : x
  2. Step 2: Convert to fraction form
    258,458.24/388,130.22 = 140,360.24/x
  3. Step 3: Cross multiply
    258,458.24x = 388,130.22 × 140,360.24
  4. Step 4: Simplify right side
    258,458.24x = 54,478,050,830.45
  5. Step 5: Solve for x
    x = 54,478,050,830.45/258,458.24
  6. Step 6: Final answer
    x = 210,780.86

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1.5x scale

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.