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Finding the Fourth Proportional to 560,039.85, 840,339.96 and 256,433.34

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Solution

The fourth proportional to 560,039.85, 840,339.96 and 256,433.34 is: 384,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,039.85 : 840,339.96 = 256,433.34 : x
  2. Step 2: Convert to fraction form
    560,039.85/840,339.96 = 256,433.34/x
  3. Step 3: Cross multiply
    560,039.85x = 840,339.96 × 256,433.34
  4. Step 4: Simplify right side
    560,039.85x = 215,491,182,678.27
  5. Step 5: Solve for x
    x = 215,491,182,678.27/560,039.85
  6. Step 6: Final answer
    x = 384,778.30

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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.