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Finding the Fourth Proportional to 329,831.20, 494,746.80 and 290,432.80

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Solution

The fourth proportional to 329,831.20, 494,746.80 and 290,432.80 is: 435,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,831.20 : 494,746.80 = 290,432.80 : x
  2. Step 2: Convert to fraction form
    329,831.20/494,746.80 = 290,432.80/x
  3. Step 3: Cross multiply
    329,831.20x = 494,746.80 × 290,432.80
  4. Step 4: Simplify right side
    329,831.20x = 143,690,698,415.04
  5. Step 5: Solve for x
    x = 143,690,698,415.04/329,831.20
  6. Step 6: Final answer
    x = 435,649.20

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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.