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Finding the Fourth Proportional to 366,855.80, 549,963.70 and 142,369.40

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Solution

The fourth proportional to 366,855.80, 549,963.70 and 142,369.40 is: 213,429.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,855.80 : 549,963.70 = 142,369.40 : x
  2. Step 2: Convert to fraction form
    366,855.80/549,963.70 = 142,369.40/x
  3. Step 3: Cross multiply
    366,855.80x = 549,963.70 × 142,369.40
  4. Step 4: Simplify right side
    366,855.80x = 78,298,001,990.78
  5. Step 5: Solve for x
    x = 78,298,001,990.78/366,855.80
  6. Step 6: Final answer
    x = 213,429.91

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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.