Home / 353,784.60-529,899.30-213,298.20

Finding the Fourth Proportional to 353,784.60, 529,899.30 and 213,298.20

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Solution

The fourth proportional to 353,784.60, 529,899.30 and 213,298.20 is: 319,478.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,784.60 : 529,899.30 = 213,298.20 : x
  2. Step 2: Convert to fraction form
    353,784.60/529,899.30 = 213,298.20/x
  3. Step 3: Cross multiply
    353,784.60x = 529,899.30 × 213,298.20
  4. Step 4: Simplify right side
    353,784.60x = 113,026,566,871.26
  5. Step 5: Solve for x
    x = 113,026,566,871.26/353,784.60
  6. Step 6: Final answer
    x = 319,478.48

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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.