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Finding the Fourth Proportional to 347,197.61, 521,017.85 and 147,518.08

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Solution

The fourth proportional to 347,197.61, 521,017.85 and 147,518.08 is: 221,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,197.61 : 521,017.85 = 147,518.08 : x
  2. Step 2: Convert to fraction form
    347,197.61/521,017.85 = 147,518.08/x
  3. Step 3: Cross multiply
    347,197.61x = 521,017.85 × 147,518.08
  4. Step 4: Simplify right side
    347,197.61x = 76,859,551,943.98
  5. Step 5: Solve for x
    x = 76,859,551,943.98/347,197.61
  6. Step 6: Final answer
    x = 221,371.20

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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.