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Finding the Fourth Proportional to 499,281.80, 749,019.90 and 214,971.80

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Solution

The fourth proportional to 499,281.80, 749,019.90 and 214,971.80 is: 322,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,281.80 : 749,019.90 = 214,971.80 : x
  2. Step 2: Convert to fraction form
    499,281.80/749,019.90 = 214,971.80/x
  3. Step 3: Cross multiply
    499,281.80x = 749,019.90 × 214,971.80
  4. Step 4: Simplify right side
    499,281.80x = 161,018,156,138.82
  5. Step 5: Solve for x
    x = 161,018,156,138.82/499,281.80
  6. Step 6: Final answer
    x = 322,499.55

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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.