Home / 210,915.09-291,063.24-115,427.84

Finding the Fourth Proportional to 210,915.09, 291,063.24 and 115,427.84

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Solution

The fourth proportional to 210,915.09, 291,063.24 and 115,427.84 is: 159,290.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,915.09 : 291,063.24 = 115,427.84 : x
  2. Step 2: Convert to fraction form
    210,915.09/291,063.24 = 115,427.84/x
  3. Step 3: Cross multiply
    210,915.09x = 291,063.24 × 115,427.84
  4. Step 4: Simplify right side
    210,915.09x = 33,596,799,641.29
  5. Step 5: Solve for x
    x = 33,596,799,641.29/210,915.09
  6. Step 6: Final answer
    x = 159,290.64

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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.