Home / 318,649.39-439,741.75-173,459.34

Finding the Fourth Proportional to 318,649.39, 439,741.75 and 173,459.34

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Solution

The fourth proportional to 318,649.39, 439,741.75 and 173,459.34 is: 239,376.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,649.39 : 439,741.75 = 173,459.34 : x
  2. Step 2: Convert to fraction form
    318,649.39/439,741.75 = 173,459.34/x
  3. Step 3: Cross multiply
    318,649.39x = 439,741.75 × 173,459.34
  4. Step 4: Simplify right side
    318,649.39x = 76,277,314,940.83
  5. Step 5: Solve for x
    x = 76,277,314,940.83/318,649.39
  6. Step 6: Final answer
    x = 239,376.94

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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.