Home / 279,000.06-385,023.32-154,823.58

Finding the Fourth Proportional to 279,000.06, 385,023.32 and 154,823.58

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Solution

The fourth proportional to 279,000.06, 385,023.32 and 154,823.58 is: 213,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.06 : 385,023.32 = 154,823.58 : x
  2. Step 2: Convert to fraction form
    279,000.06/385,023.32 = 154,823.58/x
  3. Step 3: Cross multiply
    279,000.06x = 385,023.32 × 154,823.58
  4. Step 4: Simplify right side
    279,000.06x = 59,610,688,785.89
  5. Step 5: Solve for x
    x = 59,610,688,785.89/279,000.06
  6. Step 6: Final answer
    x = 213,658.34

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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.