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Finding the Fourth Proportional to 343,339.60, 515,009.40 and 217,368.40

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Solution

The fourth proportional to 343,339.60, 515,009.40 and 217,368.40 is: 326,052.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,339.60 : 515,009.40 = 217,368.40 : x
  2. Step 2: Convert to fraction form
    343,339.60/515,009.40 = 217,368.40/x
  3. Step 3: Cross multiply
    343,339.60x = 515,009.40 × 217,368.40
  4. Step 4: Simplify right side
    343,339.60x = 111,946,769,262.96
  5. Step 5: Solve for x
    x = 111,946,769,262.96/343,339.60
  6. Step 6: Final answer
    x = 326,052.60

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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.