Home / 309,327.36-426,851.55-181,978.35

Finding the Fourth Proportional to 309,327.36, 426,851.55 and 181,978.35

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Solution

The fourth proportional to 309,327.36, 426,851.55 and 181,978.35 is: 251,118.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,327.36 : 426,851.55 = 181,978.35 : x
  2. Step 2: Convert to fraction form
    309,327.36/426,851.55 = 181,978.35/x
  3. Step 3: Cross multiply
    309,327.36x = 426,851.55 × 181,978.35
  4. Step 4: Simplify right side
    309,327.36x = 77,677,740,763.94
  5. Step 5: Solve for x
    x = 77,677,740,763.94/309,327.36
  6. Step 6: Final answer
    x = 251,118.24

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1.5x scale

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.