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Finding the Fourth Proportional to 320,577.40, 481,038.90 and 133,607.80

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Solution

The fourth proportional to 320,577.40, 481,038.90 and 133,607.80 is: 200,483.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,577.40 : 481,038.90 = 133,607.80 : x
  2. Step 2: Convert to fraction form
    320,577.40/481,038.90 = 133,607.80/x
  3. Step 3: Cross multiply
    320,577.40x = 481,038.90 × 133,607.80
  4. Step 4: Simplify right side
    320,577.40x = 64,270,549,143.42
  5. Step 5: Solve for x
    x = 64,270,549,143.42/320,577.40
  6. Step 6: Final answer
    x = 200,483.72

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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.