Home / 318,106.69-438,988.14-182,142.72

Finding the Fourth Proportional to 318,106.69, 438,988.14 and 182,142.72

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Solution

The fourth proportional to 318,106.69, 438,988.14 and 182,142.72 is: 251,357.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,106.69 : 438,988.14 = 182,142.72 : x
  2. Step 2: Convert to fraction form
    318,106.69/438,988.14 = 182,142.72/x
  3. Step 3: Cross multiply
    318,106.69x = 438,988.14 × 182,142.72
  4. Step 4: Simplify right side
    318,106.69x = 79,958,493,867.34
  5. Step 5: Solve for x
    x = 79,958,493,867.34/318,106.69
  6. Step 6: Final answer
    x = 251,357.48

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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.