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Finding the Fourth Proportional to 319,063.69, 440,302.21 and 173,870.74

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Solution

The fourth proportional to 319,063.69, 440,302.21 and 173,870.74 is: 239,938.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,063.69 : 440,302.21 = 173,870.74 : x
  2. Step 2: Convert to fraction form
    319,063.69/440,302.21 = 173,870.74/x
  3. Step 3: Cross multiply
    319,063.69x = 440,302.21 × 173,870.74
  4. Step 4: Simplify right side
    319,063.69x = 76,555,671,076.34
  5. Step 5: Solve for x
    x = 76,555,671,076.34/319,063.69
  6. Step 6: Final answer
    x = 239,938.52

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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.