Home / 659,430.72-989,135.27-210,145.59

Finding the Fourth Proportional to 659,430.72, 989,135.27 and 210,145.59

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Solution

The fourth proportional to 659,430.72, 989,135.27 and 210,145.59 is: 315,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,430.72 : 989,135.27 = 210,145.59 : x
  2. Step 2: Convert to fraction form
    659,430.72/989,135.27 = 210,145.59/x
  3. Step 3: Cross multiply
    659,430.72x = 989,135.27 × 210,145.59
  4. Step 4: Simplify right side
    659,430.72x = 207,862,410,483.65
  5. Step 5: Solve for x
    x = 207,862,410,483.65/659,430.72
  6. Step 6: Final answer
    x = 315,214.94

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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.