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Finding the Fourth Proportional to 347,394.71, 520,730.79 and 134,308.98

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Solution

The fourth proportional to 347,394.71, 520,730.79 and 134,308.98 is: 201,323.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,394.71 : 520,730.79 = 134,308.98 : x
  2. Step 2: Convert to fraction form
    347,394.71/520,730.79 = 134,308.98/x
  3. Step 3: Cross multiply
    347,394.71x = 520,730.79 × 134,308.98
  4. Step 4: Simplify right side
    347,394.71x = 69,938,821,259.49
  5. Step 5: Solve for x
    x = 69,938,821,259.49/347,394.71
  6. Step 6: Final answer
    x = 201,323.79

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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.