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Finding the Fourth Proportional to 293,187.20, 439,780.80 and 218,829.20

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Solution

The fourth proportional to 293,187.20, 439,780.80 and 218,829.20 is: 328,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,187.20 : 439,780.80 = 218,829.20 : x
  2. Step 2: Convert to fraction form
    293,187.20/439,780.80 = 218,829.20/x
  3. Step 3: Cross multiply
    293,187.20x = 439,780.80 × 218,829.20
  4. Step 4: Simplify right side
    293,187.20x = 96,236,880,639.36
  5. Step 5: Solve for x
    x = 96,236,880,639.36/293,187.20
  6. Step 6: Final answer
    x = 328,243.80

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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.