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Finding the Fourth Proportional to 310,300.48, 465,441.42 and 85,674.62

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Solution

The fourth proportional to 310,300.48, 465,441.42 and 85,674.62 is: 128,509.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,300.48 : 465,441.42 = 85,674.62 : x
  2. Step 2: Convert to fraction form
    310,300.48/465,441.42 = 85,674.62/x
  3. Step 3: Cross multiply
    310,300.48x = 465,441.42 × 85,674.62
  4. Step 4: Simplify right side
    310,300.48x = 39,876,516,790.76
  5. Step 5: Solve for x
    x = 39,876,516,790.76/310,300.48
  6. Step 6: Final answer
    x = 128,509.36

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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.