Home / 287,835.18-431,491.41-100,744.62

Finding the Fourth Proportional to 287,835.18, 431,491.41 and 100,744.62

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Solution

The fourth proportional to 287,835.18, 431,491.41 and 100,744.62 is: 151,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,835.18 : 431,491.41 = 100,744.62 : x
  2. Step 2: Convert to fraction form
    287,835.18/431,491.41 = 100,744.62/x
  3. Step 3: Cross multiply
    287,835.18x = 431,491.41 × 100,744.62
  4. Step 4: Simplify right side
    287,835.18x = 43,470,438,133.71
  5. Step 5: Solve for x
    x = 43,470,438,133.71/287,835.18
  6. Step 6: Final answer
    x = 151,025.45

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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.