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Finding the Fourth Proportional to 235,087.80, 324,421.16 and 134,485.80

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Solution

The fourth proportional to 235,087.80, 324,421.16 and 134,485.80 is: 185,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,087.80 : 324,421.16 = 134,485.80 : x
  2. Step 2: Convert to fraction form
    235,087.80/324,421.16 = 134,485.80/x
  3. Step 3: Cross multiply
    235,087.80x = 324,421.16 × 134,485.80
  4. Step 4: Simplify right side
    235,087.80x = 43,630,038,567.10
  5. Step 5: Solve for x
    x = 43,630,038,567.10/235,087.80
  6. Step 6: Final answer
    x = 185,590.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.