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Finding the Fourth Proportional to 499,510.80, 749,363.40 and 215,200.80

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Solution

The fourth proportional to 499,510.80, 749,363.40 and 215,200.80 is: 322,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,510.80 : 749,363.40 = 215,200.80 : x
  2. Step 2: Convert to fraction form
    499,510.80/749,363.40 = 215,200.80/x
  3. Step 3: Cross multiply
    499,510.80x = 749,363.40 × 215,200.80
  4. Step 4: Simplify right side
    499,510.80x = 161,263,603,170.72
  5. Step 5: Solve for x
    x = 161,263,603,170.72/499,510.80
  6. Step 6: Final answer
    x = 322,843.08

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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.