Home / 385,479.44-531,451.96-316,315.58

Finding the Fourth Proportional to 385,479.44, 531,451.96 and 316,315.58

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Solution

The fourth proportional to 385,479.44, 531,451.96 and 316,315.58 is: 436,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,479.44 : 531,451.96 = 316,315.58 : x
  2. Step 2: Convert to fraction form
    385,479.44/531,451.96 = 316,315.58/x
  3. Step 3: Cross multiply
    385,479.44x = 531,451.96 × 316,315.58
  4. Step 4: Simplify right side
    385,479.44x = 168,106,534,969.54
  5. Step 5: Solve for x
    x = 168,106,534,969.54/385,479.44
  6. Step 6: Final answer
    x = 436,097.28

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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.