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Finding the Fourth Proportional to 346,722.60, 520,083.90 and 213,169.80

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Solution

The fourth proportional to 346,722.60, 520,083.90 and 213,169.80 is: 319,754.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,722.60 : 520,083.90 = 213,169.80 : x
  2. Step 2: Convert to fraction form
    346,722.60/520,083.90 = 213,169.80/x
  3. Step 3: Cross multiply
    346,722.60x = 520,083.90 × 213,169.80
  4. Step 4: Simplify right side
    346,722.60x = 110,866,180,946.22
  5. Step 5: Solve for x
    x = 110,866,180,946.22/346,722.60
  6. Step 6: Final answer
    x = 319,754.70

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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.