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Finding the Fourth Proportional to 330,315.92, 495,492.72 and 93,640

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Solution

The fourth proportional to 330,315.92, 495,492.72 and 93,640 is: 140,465.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,315.92 : 495,492.72 = 93,640 : x
  2. Step 2: Convert to fraction form
    330,315.92/495,492.72 = 93,640/x
  3. Step 3: Cross multiply
    330,315.92x = 495,492.72 × 93,640
  4. Step 4: Simplify right side
    330,315.92x = 46,397,938,300.80
  5. Step 5: Solve for x
    x = 46,397,938,300.80/330,315.92
  6. Step 6: Final answer
    x = 140,465.34

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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.