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Finding the Fourth Proportional to 348,532.80, 521,632.80 and 306,542.40

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Solution

The fourth proportional to 348,532.80, 521,632.80 and 306,542.40 is: 458,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,532.80 : 521,632.80 = 306,542.40 : x
  2. Step 2: Convert to fraction form
    348,532.80/521,632.80 = 306,542.40/x
  3. Step 3: Cross multiply
    348,532.80x = 521,632.80 × 306,542.40
  4. Step 4: Simplify right side
    348,532.80x = 159,902,570,430.72
  5. Step 5: Solve for x
    x = 159,902,570,430.72/348,532.80
  6. Step 6: Final answer
    x = 458,787.73

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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.