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Finding the Fourth Proportional to 315,347.20, 473,020.80 and 173,629.60

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Solution

The fourth proportional to 315,347.20, 473,020.80 and 173,629.60 is: 260,444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,347.20 : 473,020.80 = 173,629.60 : x
  2. Step 2: Convert to fraction form
    315,347.20/473,020.80 = 173,629.60/x
  3. Step 3: Cross multiply
    315,347.20x = 473,020.80 × 173,629.60
  4. Step 4: Simplify right side
    315,347.20x = 82,130,412,295.68
  5. Step 5: Solve for x
    x = 82,130,412,295.68/315,347.20
  6. Step 6: Final answer
    x = 260,444.40

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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.