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Finding the Fourth Proportional to 372,432.54, 513,915.12 and 219,460.80

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Solution

The fourth proportional to 372,432.54, 513,915.12 and 219,460.80 is: 302,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,432.54 : 513,915.12 = 219,460.80 : x
  2. Step 2: Convert to fraction form
    372,432.54/513,915.12 = 219,460.80/x
  3. Step 3: Cross multiply
    372,432.54x = 513,915.12 × 219,460.80
  4. Step 4: Simplify right side
    372,432.54x = 112,784,223,367.30
  5. Step 5: Solve for x
    x = 112,784,223,367.30/372,432.54
  6. Step 6: Final answer
    x = 302,831.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.