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Finding the Fourth Proportional to 480,451.70, 720,668.44 and 143,493.32

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Solution

The fourth proportional to 480,451.70, 720,668.44 and 143,493.32 is: 215,237.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,451.70 : 720,668.44 = 143,493.32 : x
  2. Step 2: Convert to fraction form
    480,451.70/720,668.44 = 143,493.32/x
  3. Step 3: Cross multiply
    480,451.70x = 720,668.44 × 143,493.32
  4. Step 4: Simplify right side
    480,451.70x = 103,411,109,055.86
  5. Step 5: Solve for x
    x = 103,411,109,055.86/480,451.70
  6. Step 6: Final answer
    x = 215,237.26

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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.