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Finding the Fourth Proportional to 354,939.36, 489,802.32 and 193,801.20

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Solution

The fourth proportional to 354,939.36, 489,802.32 and 193,801.20 is: 267,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,939.36 : 489,802.32 = 193,801.20 : x
  2. Step 2: Convert to fraction form
    354,939.36/489,802.32 = 193,801.20/x
  3. Step 3: Cross multiply
    354,939.36x = 489,802.32 × 193,801.20
  4. Step 4: Simplify right side
    354,939.36x = 94,924,277,378.78
  5. Step 5: Solve for x
    x = 94,924,277,378.78/354,939.36
  6. Step 6: Final answer
    x = 267,438.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.