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Finding the Fourth Proportional to 345,693.60, 517,665.60 and 329,947.20

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Solution

The fourth proportional to 345,693.60, 517,665.60 and 329,947.20 is: 494,085.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,693.60 : 517,665.60 = 329,947.20 : x
  2. Step 2: Convert to fraction form
    345,693.60/517,665.60 = 329,947.20/x
  3. Step 3: Cross multiply
    345,693.60x = 517,665.60 × 329,947.20
  4. Step 4: Simplify right side
    345,693.60x = 170,802,315,256.32
  5. Step 5: Solve for x
    x = 170,802,315,256.32/345,693.60
  6. Step 6: Final answer
    x = 494,085.85

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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.