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Finding the Fourth Proportional to 319,075.80, 478,467.36 and 108,628.08

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Solution

The fourth proportional to 319,075.80, 478,467.36 and 108,628.08 is: 162,892.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,075.80 : 478,467.36 = 108,628.08 : x
  2. Step 2: Convert to fraction form
    319,075.80/478,467.36 = 108,628.08/x
  3. Step 3: Cross multiply
    319,075.80x = 478,467.36 × 108,628.08
  4. Step 4: Simplify right side
    319,075.80x = 51,974,990,659.47
  5. Step 5: Solve for x
    x = 51,974,990,659.47/319,075.80
  6. Step 6: Final answer
    x = 162,892.30

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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.