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Finding the Fourth Proportional to 347,962.40, 521,522.40 and 147,862.70

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Solution

The fourth proportional to 347,962.40, 521,522.40 and 147,862.70 is: 221,615.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,962.40 : 521,522.40 = 147,862.70 : x
  2. Step 2: Convert to fraction form
    347,962.40/521,522.40 = 147,862.70/x
  3. Step 3: Cross multiply
    347,962.40x = 521,522.40 × 147,862.70
  4. Step 4: Simplify right side
    347,962.40x = 77,113,710,174.48
  5. Step 5: Solve for x
    x = 77,113,710,174.48/347,962.40
  6. Step 6: Final answer
    x = 221,615.07

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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.