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Finding the Fourth Proportional to 369,968.40, 554,952.60 and 343,724.40

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Solution

The fourth proportional to 369,968.40, 554,952.60 and 343,724.40 is: 515,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,968.40 : 554,952.60 = 343,724.40 : x
  2. Step 2: Convert to fraction form
    369,968.40/554,952.60 = 343,724.40/x
  3. Step 3: Cross multiply
    369,968.40x = 554,952.60 × 343,724.40
  4. Step 4: Simplify right side
    369,968.40x = 190,750,749,463.44
  5. Step 5: Solve for x
    x = 190,750,749,463.44/369,968.40
  6. Step 6: Final answer
    x = 515,586.60

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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.