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Finding the Fourth Proportional to 209,958.40, 314,937.60 and 142,598.80

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Solution

The fourth proportional to 209,958.40, 314,937.60 and 142,598.80 is: 213,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,958.40 : 314,937.60 = 142,598.80 : x
  2. Step 2: Convert to fraction form
    209,958.40/314,937.60 = 142,598.80/x
  3. Step 3: Cross multiply
    209,958.40x = 314,937.60 × 142,598.80
  4. Step 4: Simplify right side
    209,958.40x = 44,909,723,834.88
  5. Step 5: Solve for x
    x = 44,909,723,834.88/209,958.40
  6. Step 6: Final answer
    x = 213,898.20

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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.