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Finding the Fourth Proportional to 359,011.63, 495,367.81 and 215,719.39

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Solution

The fourth proportional to 359,011.63, 495,367.81 and 215,719.39 is: 297,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,011.63 : 495,367.81 = 215,719.39 : x
  2. Step 2: Convert to fraction form
    359,011.63/495,367.81 = 215,719.39/x
  3. Step 3: Cross multiply
    359,011.63x = 495,367.81 × 215,719.39
  4. Step 4: Simplify right side
    359,011.63x = 106,860,441,798.84
  5. Step 5: Solve for x
    x = 106,860,441,798.84/359,011.63
  6. Step 6: Final answer
    x = 297,651.76

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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.