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Finding the Fourth Proportional to 531,346.80, 797,117.40 and 215,835.60

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Solution

The fourth proportional to 531,346.80, 797,117.40 and 215,835.60 is: 323,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,346.80 : 797,117.40 = 215,835.60 : x
  2. Step 2: Convert to fraction form
    531,346.80/797,117.40 = 215,835.60/x
  3. Step 3: Cross multiply
    531,346.80x = 797,117.40 × 215,835.60
  4. Step 4: Simplify right side
    531,346.80x = 172,046,312,299.44
  5. Step 5: Solve for x
    x = 172,046,312,299.44/531,346.80
  6. Step 6: Final answer
    x = 323,792.88

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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.