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Finding the Fourth Proportional to 480,345.44, 720,493.45 and 143,388.88

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Solution

The fourth proportional to 480,345.44, 720,493.45 and 143,388.88 is: 215,075.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,345.44 : 720,493.45 = 143,388.88 : x
  2. Step 2: Convert to fraction form
    480,345.44/720,493.45 = 143,388.88/x
  3. Step 3: Cross multiply
    480,345.44x = 720,493.45 × 143,388.88
  4. Step 4: Simplify right side
    480,345.44x = 103,310,746,683.13
  5. Step 5: Solve for x
    x = 103,310,746,683.13/480,345.44
  6. Step 6: Final answer
    x = 215,075.94

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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.