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Finding the Fourth Proportional to 499,840.67, 749,768.90 and 144,856.55

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Solution

The fourth proportional to 499,840.67, 749,768.90 and 144,856.55 is: 217,287.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,840.67 : 749,768.90 = 144,856.55 : x
  2. Step 2: Convert to fraction form
    499,840.67/749,768.90 = 144,856.55/x
  3. Step 3: Cross multiply
    499,840.67x = 749,768.90 × 144,856.55
  4. Step 4: Simplify right side
    499,840.67x = 108,608,931,678.17
  5. Step 5: Solve for x
    x = 108,608,931,678.17/499,840.67
  6. Step 6: Final answer
    x = 217,287.11

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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.