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Finding the Fourth Proportional to 218,958.40, 328,567.20 and 144,294.40

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Solution

The fourth proportional to 218,958.40, 328,567.20 and 144,294.40 is: 216,527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,958.40 : 328,567.20 = 144,294.40 : x
  2. Step 2: Convert to fraction form
    218,958.40/328,567.20 = 144,294.40/x
  3. Step 3: Cross multiply
    218,958.40x = 328,567.20 × 144,294.40
  4. Step 4: Simplify right side
    218,958.40x = 47,410,406,983.68
  5. Step 5: Solve for x
    x = 47,410,406,983.68/218,958.40
  6. Step 6: Final answer
    x = 216,527.01

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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.