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Finding the Fourth Proportional to 348,529.80, 522,783.90 and 99,211.80

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Solution

The fourth proportional to 348,529.80, 522,783.90 and 99,211.80 is: 148,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,529.80 : 522,783.90 = 99,211.80 : x
  2. Step 2: Convert to fraction form
    348,529.80/522,783.90 = 99,211.80/x
  3. Step 3: Cross multiply
    348,529.80x = 522,783.90 × 99,211.80
  4. Step 4: Simplify right side
    348,529.80x = 51,866,331,730.02
  5. Step 5: Solve for x
    x = 51,866,331,730.02/348,529.80
  6. Step 6: Final answer
    x = 148,814.63

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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.