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Finding the Fourth Proportional to 347,688.76, 479,793.90 and 213,526.84

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Solution

The fourth proportional to 347,688.76, 479,793.90 and 213,526.84 is: 294,656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,688.76 : 479,793.90 = 213,526.84 : x
  2. Step 2: Convert to fraction form
    347,688.76/479,793.90 = 213,526.84/x
  3. Step 3: Cross multiply
    347,688.76x = 479,793.90 × 213,526.84
  4. Step 4: Simplify right side
    347,688.76x = 102,448,875,318.28
  5. Step 5: Solve for x
    x = 102,448,875,318.28/347,688.76
  6. Step 6: Final answer
    x = 294,656.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.