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Finding the Fourth Proportional to 365,998.80, 549,088.20 and 126,116.40

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Solution

The fourth proportional to 365,998.80, 549,088.20 and 126,116.40 is: 189,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,998.80 : 549,088.20 = 126,116.40 : x
  2. Step 2: Convert to fraction form
    365,998.80/549,088.20 = 126,116.40/x
  3. Step 3: Cross multiply
    365,998.80x = 549,088.20 × 126,116.40
  4. Step 4: Simplify right side
    365,998.80x = 69,249,027,066.48
  5. Step 5: Solve for x
    x = 69,249,027,066.48/365,998.80
  6. Step 6: Final answer
    x = 189,205.61

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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.