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Finding the Fourth Proportional to 366,893.80, 550,020.70 and 142,407.40

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Solution

The fourth proportional to 366,893.80, 550,020.70 and 142,407.40 is: 213,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,893.80 : 550,020.70 = 142,407.40 : x
  2. Step 2: Convert to fraction form
    366,893.80/550,020.70 = 142,407.40/x
  3. Step 3: Cross multiply
    366,893.80x = 550,020.70 × 142,407.40
  4. Step 4: Simplify right side
    366,893.80x = 78,327,017,833.18
  5. Step 5: Solve for x
    x = 78,327,017,833.18/366,893.80
  6. Step 6: Final answer
    x = 213,486.89

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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.