Home / 318,583.02-477,649.91-128,987.44

Finding the Fourth Proportional to 318,583.02, 477,649.91 and 128,987.44

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Solution

The fourth proportional to 318,583.02, 477,649.91 and 128,987.44 is: 193,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,583.02 : 477,649.91 = 128,987.44 : x
  2. Step 2: Convert to fraction form
    318,583.02/477,649.91 = 128,987.44/x
  3. Step 3: Cross multiply
    318,583.02x = 477,649.91 × 128,987.44
  4. Step 4: Simplify right side
    318,583.02x = 61,610,838,235.47
  5. Step 5: Solve for x
    x = 61,610,838,235.47/318,583.02
  6. Step 6: Final answer
    x = 193,390.21

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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.