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Finding the Fourth Proportional to 293,706.40, 440,559.60 and 278,543.20

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Solution

The fourth proportional to 293,706.40, 440,559.60 and 278,543.20 is: 417,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,706.40 : 440,559.60 = 278,543.20 : x
  2. Step 2: Convert to fraction form
    293,706.40/440,559.60 = 278,543.20/x
  3. Step 3: Cross multiply
    293,706.40x = 440,559.60 × 278,543.20
  4. Step 4: Simplify right side
    293,706.40x = 122,714,880,774.72
  5. Step 5: Solve for x
    x = 122,714,880,774.72/293,706.40
  6. Step 6: Final answer
    x = 417,814.80

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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.