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Finding the Fourth Proportional to 330,330.62, 495,320.94 and 130,642.94

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Solution

The fourth proportional to 330,330.62, 495,320.94 and 130,642.94 is: 195,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,330.62 : 495,320.94 = 130,642.94 : x
  2. Step 2: Convert to fraction form
    330,330.62/495,320.94 = 130,642.94/x
  3. Step 3: Cross multiply
    330,330.62x = 495,320.94 × 130,642.94
  4. Step 4: Simplify right side
    330,330.62x = 64,710,183,845.16
  5. Step 5: Solve for x
    x = 64,710,183,845.16/330,330.62
  6. Step 6: Final answer
    x = 195,895.20

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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.