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Finding the Fourth Proportional to 312,007.20, 468,010.80 and 170,289.60

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Solution

The fourth proportional to 312,007.20, 468,010.80 and 170,289.60 is: 255,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,007.20 : 468,010.80 = 170,289.60 : x
  2. Step 2: Convert to fraction form
    312,007.20/468,010.80 = 170,289.60/x
  3. Step 3: Cross multiply
    312,007.20x = 468,010.80 × 170,289.60
  4. Step 4: Simplify right side
    312,007.20x = 79,697,371,927.68
  5. Step 5: Solve for x
    x = 79,697,371,927.68/312,007.20
  6. Step 6: Final answer
    x = 255,434.40

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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.