Home / 279,115.04-385,168.02-151,790.78

Finding the Fourth Proportional to 279,115.04, 385,168.02 and 151,790.78

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Solution

The fourth proportional to 279,115.04, 385,168.02 and 151,790.78 is: 209,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,115.04 : 385,168.02 = 151,790.78 : x
  2. Step 2: Convert to fraction form
    279,115.04/385,168.02 = 151,790.78/x
  3. Step 3: Cross multiply
    279,115.04x = 385,168.02 × 151,790.78
  4. Step 4: Simplify right side
    279,115.04x = 58,464,954,186.86
  5. Step 5: Solve for x
    x = 58,464,954,186.86/279,115.04
  6. Step 6: Final answer
    x = 209,465.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.