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Finding the Fourth Proportional to 540,169.76, 745,282.68 and 310,715.12

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Solution

The fourth proportional to 540,169.76, 745,282.68 and 310,715.12 is: 428,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,169.76 : 745,282.68 = 310,715.12 : x
  2. Step 2: Convert to fraction form
    540,169.76/745,282.68 = 310,715.12/x
  3. Step 3: Cross multiply
    540,169.76x = 745,282.68 × 310,715.12
  4. Step 4: Simplify right side
    540,169.76x = 231,570,597,350.12
  5. Step 5: Solve for x
    x = 231,570,597,350.12/540,169.76
  6. Step 6: Final answer
    x = 428,699.67

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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.