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Finding the Fourth Proportional to 315,339.20, 473,008.80 and 173,621.60

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Solution

The fourth proportional to 315,339.20, 473,008.80 and 173,621.60 is: 260,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,339.20 : 473,008.80 = 173,621.60 : x
  2. Step 2: Convert to fraction form
    315,339.20/473,008.80 = 173,621.60/x
  3. Step 3: Cross multiply
    315,339.20x = 473,008.80 × 173,621.60
  4. Step 4: Simplify right side
    315,339.20x = 82,124,544,670.08
  5. Step 5: Solve for x
    x = 82,124,544,670.08/315,339.20
  6. Step 6: Final answer
    x = 260,432.40

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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.