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Finding the Fourth Proportional to 310,000.60, 465,065.70 and 99,659.80

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Solution

The fourth proportional to 310,000.60, 465,065.70 and 99,659.80 is: 149,510.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,000.60 : 465,065.70 = 99,659.80 : x
  2. Step 2: Convert to fraction form
    310,000.60/465,065.70 = 99,659.80/x
  3. Step 3: Cross multiply
    310,000.60x = 465,065.70 × 99,659.80
  4. Step 4: Simplify right side
    310,000.60x = 46,348,354,648.86
  5. Step 5: Solve for x
    x = 46,348,354,648.86/310,000.60
  6. Step 6: Final answer
    x = 149,510.53

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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.