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Finding the Fourth Proportional to 340,038.47, 469,286.21 and 253,847.79

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Solution

The fourth proportional to 340,038.47, 469,286.21 and 253,847.79 is: 350,334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,038.47 : 469,286.21 = 253,847.79 : x
  2. Step 2: Convert to fraction form
    340,038.47/469,286.21 = 253,847.79/x
  3. Step 3: Cross multiply
    340,038.47x = 469,286.21 × 253,847.79
  4. Step 4: Simplify right side
    340,038.47x = 119,127,267,285.98
  5. Step 5: Solve for x
    x = 119,127,267,285.98/340,038.47
  6. Step 6: Final answer
    x = 350,334.68

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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.