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Finding the Fourth Proportional to 388,045.80, 582,068.70 and 293,567.40

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Solution

The fourth proportional to 388,045.80, 582,068.70 and 293,567.40 is: 440,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,045.80 : 582,068.70 = 293,567.40 : x
  2. Step 2: Convert to fraction form
    388,045.80/582,068.70 = 293,567.40/x
  3. Step 3: Cross multiply
    388,045.80x = 582,068.70 × 293,567.40
  4. Step 4: Simplify right side
    388,045.80x = 170,876,394,880.38
  5. Step 5: Solve for x
    x = 170,876,394,880.38/388,045.80
  6. Step 6: Final answer
    x = 440,351.10

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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.