Home / 286,870.40-395,890.72-157,814.24

Finding the Fourth Proportional to 286,870.40, 395,890.72 and 157,814.24

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Solution

The fourth proportional to 286,870.40, 395,890.72 and 157,814.24 is: 217,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,870.40 : 395,890.72 = 157,814.24 : x
  2. Step 2: Convert to fraction form
    286,870.40/395,890.72 = 157,814.24/x
  3. Step 3: Cross multiply
    286,870.40x = 395,890.72 × 157,814.24
  4. Step 4: Simplify right side
    286,870.40x = 62,477,193,099.85
  5. Step 5: Solve for x
    x = 62,477,193,099.85/286,870.40
  6. Step 6: Final answer
    x = 217,788.91

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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.