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Finding the Fourth Proportional to 330,159.20, 495,238.80 and 307,851.80

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Solution

The fourth proportional to 330,159.20, 495,238.80 and 307,851.80 is: 461,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,159.20 : 495,238.80 = 307,851.80 : x
  2. Step 2: Convert to fraction form
    330,159.20/495,238.80 = 307,851.80/x
  3. Step 3: Cross multiply
    330,159.20x = 495,238.80 × 307,851.80
  4. Step 4: Simplify right side
    330,159.20x = 152,460,156,009.84
  5. Step 5: Solve for x
    x = 152,460,156,009.84/330,159.20
  6. Step 6: Final answer
    x = 461,777.70

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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.