Home / 459,518.30-689,277.70-143,999.90

Finding the Fourth Proportional to 459,518.30, 689,277.70 and 143,999.90

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Solution

The fourth proportional to 459,518.30, 689,277.70 and 143,999.90 is: 215,999.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,518.30 : 689,277.70 = 143,999.90 : x
  2. Step 2: Convert to fraction form
    459,518.30/689,277.70 = 143,999.90/x
  3. Step 3: Cross multiply
    459,518.30x = 689,277.70 × 143,999.90
  4. Step 4: Simplify right side
    459,518.30x = 99,255,919,872.23
  5. Step 5: Solve for x
    x = 99,255,919,872.23/459,518.30
  6. Step 6: Final answer
    x = 215,999.93

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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.