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Finding the Fourth Proportional to 353,301.60, 528,742.80 and 213,160.80

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Solution

The fourth proportional to 353,301.60, 528,742.80 and 213,160.80 is: 319,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,301.60 : 528,742.80 = 213,160.80 : x
  2. Step 2: Convert to fraction form
    353,301.60/528,742.80 = 213,160.80/x
  3. Step 3: Cross multiply
    353,301.60x = 528,742.80 × 213,160.80
  4. Step 4: Simplify right side
    353,301.60x = 112,707,238,242.24
  5. Step 5: Solve for x
    x = 112,707,238,242.24/353,301.60
  6. Step 6: Final answer
    x = 319,011.40

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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.