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Finding the Fourth Proportional to 365,999.80, 549,089.70 and 126,117.40

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Solution

The fourth proportional to 365,999.80, 549,089.70 and 126,117.40 is: 189,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,999.80 : 549,089.70 = 126,117.40 : x
  2. Step 2: Convert to fraction form
    365,999.80/549,089.70 = 126,117.40/x
  3. Step 3: Cross multiply
    365,999.80x = 549,089.70 × 126,117.40
  4. Step 4: Simplify right side
    365,999.80x = 69,249,765,330.78
  5. Step 5: Solve for x
    x = 69,249,765,330.78/365,999.80
  6. Step 6: Final answer
    x = 189,207.11

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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.