Home / 319,835.90-477,172.72-308,206.46

Finding the Fourth Proportional to 319,835.90, 477,172.72 and 308,206.46

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Solution

The fourth proportional to 319,835.90, 477,172.72 and 308,206.46 is: 459,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,835.90 : 477,172.72 = 308,206.46 : x
  2. Step 2: Convert to fraction form
    319,835.90/477,172.72 = 308,206.46/x
  3. Step 3: Cross multiply
    319,835.90x = 477,172.72 × 308,206.46
  4. Step 4: Simplify right side
    319,835.90x = 147,067,714,839.77
  5. Step 5: Solve for x
    x = 147,067,714,839.77/319,835.90
  6. Step 6: Final answer
    x = 459,822.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.