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Finding the Fourth Proportional to 480,453.70, 720,671.44 and 143,495.32

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Solution

The fourth proportional to 480,453.70, 720,671.44 and 143,495.32 is: 215,240.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,453.70 : 720,671.44 = 143,495.32 : x
  2. Step 2: Convert to fraction form
    480,453.70/720,671.44 = 143,495.32/x
  3. Step 3: Cross multiply
    480,453.70x = 720,671.44 × 143,495.32
  4. Step 4: Simplify right side
    480,453.70x = 103,412,978,897.66
  5. Step 5: Solve for x
    x = 103,412,978,897.66/480,453.70
  6. Step 6: Final answer
    x = 215,240.26

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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.