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Finding the Fourth Proportional to 266,423.18, 399,623.79 and 148,019

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Solution

The fourth proportional to 266,423.18, 399,623.79 and 148,019 is: 222,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,423.18 : 399,623.79 = 148,019 : x
  2. Step 2: Convert to fraction form
    266,423.18/399,623.79 = 148,019/x
  3. Step 3: Cross multiply
    266,423.18x = 399,623.79 × 148,019
  4. Step 4: Simplify right side
    266,423.18x = 59,151,913,772.01
  5. Step 5: Solve for x
    x = 59,151,913,772.01/266,423.18
  6. Step 6: Final answer
    x = 222,022.40

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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.