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Finding the Fourth Proportional to 359,418.70, 495,991.65 and 198,289.18

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Solution

The fourth proportional to 359,418.70, 495,991.65 and 198,289.18 is: 273,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,418.70 : 495,991.65 = 198,289.18 : x
  2. Step 2: Convert to fraction form
    359,418.70/495,991.65 = 198,289.18/x
  3. Step 3: Cross multiply
    359,418.70x = 495,991.65 × 198,289.18
  4. Step 4: Simplify right side
    359,418.70x = 98,349,777,565.35
  5. Step 5: Solve for x
    x = 98,349,777,565.35/359,418.70
  6. Step 6: Final answer
    x = 273,635.67

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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.