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Finding the Fourth Proportional to 279,567.18, 418,719.87 and 129,492.23

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Solution

The fourth proportional to 279,567.18, 418,719.87 and 129,492.23 is: 193,946.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,567.18 : 418,719.87 = 129,492.23 : x
  2. Step 2: Convert to fraction form
    279,567.18/418,719.87 = 129,492.23/x
  3. Step 3: Cross multiply
    279,567.18x = 418,719.87 × 129,492.23
  4. Step 4: Simplify right side
    279,567.18x = 54,220,967,618.01
  5. Step 5: Solve for x
    x = 54,220,967,618.01/279,567.18
  6. Step 6: Final answer
    x = 193,946.11

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1.5x scale

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.