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Finding the Fourth Proportional to 347,488.18, 521,065.31 and 147,700.26

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Solution

The fourth proportional to 347,488.18, 521,065.31 and 147,700.26 is: 221,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,488.18 : 521,065.31 = 147,700.26 : x
  2. Step 2: Convert to fraction form
    347,488.18/521,065.31 = 147,700.26/x
  3. Step 3: Cross multiply
    347,488.18x = 521,065.31 × 147,700.26
  4. Step 4: Simplify right side
    347,488.18x = 76,961,481,025.48
  5. Step 5: Solve for x
    x = 76,961,481,025.48/347,488.18
  6. Step 6: Final answer
    x = 221,479.42

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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.