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Finding the Fourth Proportional to 366,878.80, 549,998.20 and 142,392.40

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Solution

The fourth proportional to 366,878.80, 549,998.20 and 142,392.40 is: 213,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,878.80 : 549,998.20 = 142,392.40 : x
  2. Step 2: Convert to fraction form
    366,878.80/549,998.20 = 142,392.40/x
  3. Step 3: Cross multiply
    366,878.80x = 549,998.20 × 142,392.40
  4. Step 4: Simplify right side
    366,878.80x = 78,315,563,693.68
  5. Step 5: Solve for x
    x = 78,315,563,693.68/366,878.80
  6. Step 6: Final answer
    x = 213,464.40

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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.