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Finding the Fourth Proportional to 407,117.80, 611,259.90 and 229,970.80

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Solution

The fourth proportional to 407,117.80, 611,259.90 and 229,970.80 is: 345,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,117.80 : 611,259.90 = 229,970.80 : x
  2. Step 2: Convert to fraction form
    407,117.80/611,259.90 = 229,970.80/x
  3. Step 3: Cross multiply
    407,117.80x = 611,259.90 × 229,970.80
  4. Step 4: Simplify right side
    407,117.80x = 140,571,928,210.92
  5. Step 5: Solve for x
    x = 140,571,928,210.92/407,117.80
  6. Step 6: Final answer
    x = 345,285.64

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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.