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Finding the Fourth Proportional to 346,273.20, 519,409.80 and 212,720.40

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Solution

The fourth proportional to 346,273.20, 519,409.80 and 212,720.40 is: 319,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,273.20 : 519,409.80 = 212,720.40 : x
  2. Step 2: Convert to fraction form
    346,273.20/519,409.80 = 212,720.40/x
  3. Step 3: Cross multiply
    346,273.20x = 519,409.80 × 212,720.40
  4. Step 4: Simplify right side
    346,273.20x = 110,489,060,419.92
  5. Step 5: Solve for x
    x = 110,489,060,419.92/346,273.20
  6. Step 6: Final answer
    x = 319,080.60

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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.