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Finding the Fourth Proportional to 366,538.80, 549,808.20 and 129,905.40

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Solution

The fourth proportional to 366,538.80, 549,808.20 and 129,905.40 is: 194,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,538.80 : 549,808.20 = 129,905.40 : x
  2. Step 2: Convert to fraction form
    366,538.80/549,808.20 = 129,905.40/x
  3. Step 3: Cross multiply
    366,538.80x = 549,808.20 × 129,905.40
  4. Step 4: Simplify right side
    366,538.80x = 71,423,054,144.28
  5. Step 5: Solve for x
    x = 71,423,054,144.28/366,538.80
  6. Step 6: Final answer
    x = 194,858.10

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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.