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Finding the Fourth Proportional to 310,294.08, 465,431.82 and 85,668.24

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Solution

The fourth proportional to 310,294.08, 465,431.82 and 85,668.24 is: 128,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,294.08 : 465,431.82 = 85,668.24 : x
  2. Step 2: Convert to fraction form
    310,294.08/465,431.82 = 85,668.24/x
  3. Step 3: Cross multiply
    310,294.08x = 465,431.82 × 85,668.24
  4. Step 4: Simplify right side
    310,294.08x = 39,872,724,859.40
  5. Step 5: Solve for x
    x = 39,872,724,859.40/310,294.08
  6. Step 6: Final answer
    x = 128,499.79

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1.5x scale

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.