Home / 386,721.60-579,909.60-149,985.60

Finding the Fourth Proportional to 386,721.60, 579,909.60 and 149,985.60

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Solution

The fourth proportional to 386,721.60, 579,909.60 and 149,985.60 is: 224,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,721.60 : 579,909.60 = 149,985.60 : x
  2. Step 2: Convert to fraction form
    386,721.60/579,909.60 = 149,985.60/x
  3. Step 3: Cross multiply
    386,721.60x = 579,909.60 × 149,985.60
  4. Step 4: Simplify right side
    386,721.60x = 86,978,089,301.76
  5. Step 5: Solve for x
    x = 86,978,089,301.76/386,721.60
  6. Step 6: Final answer
    x = 224,911.38

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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.