Home / 459,317.40-688,997.70-143,784.60

Finding the Fourth Proportional to 459,317.40, 688,997.70 and 143,784.60

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Solution

The fourth proportional to 459,317.40, 688,997.70 and 143,784.60 is: 215,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,317.40 : 688,997.70 = 143,784.60 : x
  2. Step 2: Convert to fraction form
    459,317.40/688,997.70 = 143,784.60/x
  3. Step 3: Cross multiply
    459,317.40x = 688,997.70 × 143,784.60
  4. Step 4: Simplify right side
    459,317.40x = 99,067,258,695.42
  5. Step 5: Solve for x
    x = 99,067,258,695.42/459,317.40
  6. Step 6: Final answer
    x = 215,683.66

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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.