Home / 279,225.63-385,341.03-151,905.78

Finding the Fourth Proportional to 279,225.63, 385,341.03 and 151,905.78

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Solution

The fourth proportional to 279,225.63, 385,341.03 and 151,905.78 is: 209,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,225.63 : 385,341.03 = 151,905.78 : x
  2. Step 2: Convert to fraction form
    279,225.63/385,341.03 = 151,905.78/x
  3. Step 3: Cross multiply
    279,225.63x = 385,341.03 × 151,905.78
  4. Step 4: Simplify right side
    279,225.63x = 58,535,529,728.15
  5. Step 5: Solve for x
    x = 58,535,529,728.15/279,225.63
  6. Step 6: Final answer
    x = 209,635.23

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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.