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Finding the Fourth Proportional to 330,432.96, 495,649.80 and 90,548.91

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Solution

The fourth proportional to 330,432.96, 495,649.80 and 90,548.91 is: 135,823.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,432.96 : 495,649.80 = 90,548.91 : x
  2. Step 2: Convert to fraction form
    330,432.96/495,649.80 = 90,548.91/x
  3. Step 3: Cross multiply
    330,432.96x = 495,649.80 × 90,548.91
  4. Step 4: Simplify right side
    330,432.96x = 44,880,549,131.72
  5. Step 5: Solve for x
    x = 44,880,549,131.72/330,432.96
  6. Step 6: Final answer
    x = 135,823.46

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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.