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Finding the Fourth Proportional to 279,316.18, 385,389.12 and 164,599.51

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Solution

The fourth proportional to 279,316.18, 385,389.12 and 164,599.51 is: 227,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,316.18 : 385,389.12 = 164,599.51 : x
  2. Step 2: Convert to fraction form
    279,316.18/385,389.12 = 164,599.51/x
  3. Step 3: Cross multiply
    279,316.18x = 385,389.12 × 164,599.51
  4. Step 4: Simplify right side
    279,316.18x = 63,434,860,311.33
  5. Step 5: Solve for x
    x = 63,434,860,311.33/279,316.18
  6. Step 6: Final answer
    x = 227,107.72

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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.