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Finding the Fourth Proportional to 310,300.58, 465,441.56 and 85,674.74

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Solution

The fourth proportional to 310,300.58, 465,441.56 and 85,674.74 is: 128,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,300.58 : 465,441.56 = 85,674.74 : x
  2. Step 2: Convert to fraction form
    310,300.58/465,441.56 = 85,674.74/x
  3. Step 3: Cross multiply
    310,300.58x = 465,441.56 × 85,674.74
  4. Step 4: Simplify right side
    310,300.58x = 39,876,584,638.19
  5. Step 5: Solve for x
    x = 39,876,584,638.19/310,300.58
  6. Step 6: Final answer
    x = 128,509.54

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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.