Home / 287,019.90-430,296.57-100,162.62

Finding the Fourth Proportional to 287,019.90, 430,296.57 and 100,162.62

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Solution

The fourth proportional to 287,019.90, 430,296.57 and 100,162.62 is: 150,162.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,019.90 : 430,296.57 = 100,162.62 : x
  2. Step 2: Convert to fraction form
    287,019.90/430,296.57 = 100,162.62/x
  3. Step 3: Cross multiply
    287,019.90x = 430,296.57 × 100,162.62
  4. Step 4: Simplify right side
    287,019.90x = 43,099,631,828.21
  5. Step 5: Solve for x
    x = 43,099,631,828.21/287,019.90
  6. Step 6: Final answer
    x = 150,162.52

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1.5x scale

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.