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Finding the Fourth Proportional to 279,734.40, 418,617.45 and 256,114.80

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Solution

The fourth proportional to 279,734.40, 418,617.45 and 256,114.80 is: 383,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,734.40 : 418,617.45 = 256,114.80 : x
  2. Step 2: Convert to fraction form
    279,734.40/418,617.45 = 256,114.80/x
  3. Step 3: Cross multiply
    279,734.40x = 418,617.45 × 256,114.80
  4. Step 4: Simplify right side
    279,734.40x = 107,214,124,483.26
  5. Step 5: Solve for x
    x = 107,214,124,483.26/279,734.40
  6. Step 6: Final answer
    x = 383,271.15

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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.