Home / 346,542.20-519,813.30-212,989.40

Finding the Fourth Proportional to 346,542.20, 519,813.30 and 212,989.40

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Solution

The fourth proportional to 346,542.20, 519,813.30 and 212,989.40 is: 319,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,542.20 : 519,813.30 = 212,989.40 : x
  2. Step 2: Convert to fraction form
    346,542.20/519,813.30 = 212,989.40/x
  3. Step 3: Cross multiply
    346,542.20x = 519,813.30 × 212,989.40
  4. Step 4: Simplify right side
    346,542.20x = 110,714,722,879.02
  5. Step 5: Solve for x
    x = 110,714,722,879.02/346,542.20
  6. Step 6: Final answer
    x = 319,484.10

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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.