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Finding the Fourth Proportional to 312,842.10, 469,153.80 and 163,032.60

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Solution

The fourth proportional to 312,842.10, 469,153.80 and 163,032.60 is: 244,491.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,842.10 : 469,153.80 = 163,032.60 : x
  2. Step 2: Convert to fraction form
    312,842.10/469,153.80 = 163,032.60/x
  3. Step 3: Cross multiply
    312,842.10x = 469,153.80 × 163,032.60
  4. Step 4: Simplify right side
    312,842.10x = 76,487,363,813.88
  5. Step 5: Solve for x
    x = 76,487,363,813.88/312,842.10
  6. Step 6: Final answer
    x = 244,491.91

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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.