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Finding the Fourth Proportional to 659,651.50, 989,427.57 and 210,354.22

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Solution

The fourth proportional to 659,651.50, 989,427.57 and 210,354.22 is: 315,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,651.50 : 989,427.57 = 210,354.22 : x
  2. Step 2: Convert to fraction form
    659,651.50/989,427.57 = 210,354.22/x
  3. Step 3: Cross multiply
    659,651.50x = 989,427.57 × 210,354.22
  4. Step 4: Simplify right side
    659,651.50x = 208,130,264,733.85
  5. Step 5: Solve for x
    x = 208,130,264,733.85/659,651.50
  6. Step 6: Final answer
    x = 315,515.49

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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.