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Finding the Fourth Proportional to 309,962.79, 464,882.98 and 85,265.25

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Solution

The fourth proportional to 309,962.79, 464,882.98 and 85,265.25 is: 127,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,962.79 : 464,882.98 = 85,265.25 : x
  2. Step 2: Convert to fraction form
    309,962.79/464,882.98 = 85,265.25/x
  3. Step 3: Cross multiply
    309,962.79x = 464,882.98 × 85,265.25
  4. Step 4: Simplify right side
    309,962.79x = 39,638,363,510.45
  5. Step 5: Solve for x
    x = 39,638,363,510.45/309,962.79
  6. Step 6: Final answer
    x = 127,881.04

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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.