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Finding the Fourth Proportional to 329,905.40, 495,149.70 and 282,666.20

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Solution

The fourth proportional to 329,905.40, 495,149.70 and 282,666.20 is: 424,249.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,905.40 : 495,149.70 = 282,666.20 : x
  2. Step 2: Convert to fraction form
    329,905.40/495,149.70 = 282,666.20/x
  3. Step 3: Cross multiply
    329,905.40x = 495,149.70 × 282,666.20
  4. Step 4: Simplify right side
    329,905.40x = 139,962,084,130.14
  5. Step 5: Solve for x
    x = 139,962,084,130.14/329,905.40
  6. Step 6: Final answer
    x = 424,249.15

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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.