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Finding the Fourth Proportional to 348,549.60, 522,133.20 and 207,890.40

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Solution

The fourth proportional to 348,549.60, 522,133.20 and 207,890.40 is: 311,423.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,549.60 : 522,133.20 = 207,890.40 : x
  2. Step 2: Convert to fraction form
    348,549.60/522,133.20 = 207,890.40/x
  3. Step 3: Cross multiply
    348,549.60x = 522,133.20 × 207,890.40
  4. Step 4: Simplify right side
    348,549.60x = 108,546,479,801.28
  5. Step 5: Solve for x
    x = 108,546,479,801.28/348,549.60
  6. Step 6: Final answer
    x = 311,423.34

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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.