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Finding the Fourth Proportional to 243,007.80, 364,511.70 and 154,361.40

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Solution

The fourth proportional to 243,007.80, 364,511.70 and 154,361.40 is: 231,542.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,007.80 : 364,511.70 = 154,361.40 : x
  2. Step 2: Convert to fraction form
    243,007.80/364,511.70 = 154,361.40/x
  3. Step 3: Cross multiply
    243,007.80x = 364,511.70 × 154,361.40
  4. Step 4: Simplify right side
    243,007.80x = 56,266,536,328.38
  5. Step 5: Solve for x
    x = 56,266,536,328.38/243,007.80
  6. Step 6: Final answer
    x = 231,542.10

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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.