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Finding the Fourth Proportional to 359,280.80, 495,811.04 and 198,142.40

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Solution

The fourth proportional to 359,280.80, 495,811.04 and 198,142.40 is: 273,438.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,280.80 : 495,811.04 = 198,142.40 : x
  2. Step 2: Convert to fraction form
    359,280.80/495,811.04 = 198,142.40/x
  3. Step 3: Cross multiply
    359,280.80x = 495,811.04 × 198,142.40
  4. Step 4: Simplify right side
    359,280.80x = 98,241,189,412.10
  5. Step 5: Solve for x
    x = 98,241,189,412.10/359,280.80
  6. Step 6: Final answer
    x = 273,438.46

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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.