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Finding the Fourth Proportional to 348,031.20, 522,046.80 and 214,478.40

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Solution

The fourth proportional to 348,031.20, 522,046.80 and 214,478.40 is: 321,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,031.20 : 522,046.80 = 214,478.40 : x
  2. Step 2: Convert to fraction form
    348,031.20/522,046.80 = 214,478.40/x
  3. Step 3: Cross multiply
    348,031.20x = 522,046.80 × 214,478.40
  4. Step 4: Simplify right side
    348,031.20x = 111,967,762,389.12
  5. Step 5: Solve for x
    x = 111,967,762,389.12/348,031.20
  6. Step 6: Final answer
    x = 321,717.60

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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.