Home / 319,290.12-440,256.06-238,581.72

Finding the Fourth Proportional to 319,290.12, 440,256.06 and 238,581.72

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Solution

The fourth proportional to 319,290.12, 440,256.06 and 238,581.72 is: 328,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,290.12 : 440,256.06 = 238,581.72 : x
  2. Step 2: Convert to fraction form
    319,290.12/440,256.06 = 238,581.72/x
  3. Step 3: Cross multiply
    319,290.12x = 440,256.06 × 238,581.72
  4. Step 4: Simplify right side
    319,290.12x = 105,037,048,035.22
  5. Step 5: Solve for x
    x = 105,037,048,035.22/319,290.12
  6. Step 6: Final answer
    x = 328,970.56

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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.