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Finding the Fourth Proportional to 369,968.40, 554,952.60 and 133,318.80

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Solution

The fourth proportional to 369,968.40, 554,952.60 and 133,318.80 is: 199,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,968.40 : 554,952.60 = 133,318.80 : x
  2. Step 2: Convert to fraction form
    369,968.40/554,952.60 = 133,318.80/x
  3. Step 3: Cross multiply
    369,968.40x = 554,952.60 × 133,318.80
  4. Step 4: Simplify right side
    369,968.40x = 73,985,614,688.88
  5. Step 5: Solve for x
    x = 73,985,614,688.88/369,968.40
  6. Step 6: Final answer
    x = 199,978.20

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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.