Home / 286,690.41-430,036.99-87,012.53

Finding the Fourth Proportional to 286,690.41, 430,036.99 and 87,012.53

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Solution

The fourth proportional to 286,690.41, 430,036.99 and 87,012.53 is: 130,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,690.41 : 430,036.99 = 87,012.53 : x
  2. Step 2: Convert to fraction form
    286,690.41/430,036.99 = 87,012.53/x
  3. Step 3: Cross multiply
    286,690.41x = 430,036.99 × 87,012.53
  4. Step 4: Simplify right side
    286,690.41x = 37,418,606,064.70
  5. Step 5: Solve for x
    x = 37,418,606,064.70/286,690.41
  6. Step 6: Final answer
    x = 130,519.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.