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Finding the Fourth Proportional to 486,709.79, 730,090.67 and 149,981.72

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Solution

The fourth proportional to 486,709.79, 730,090.67 and 149,981.72 is: 224,980.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,709.79 : 730,090.67 = 149,981.72 : x
  2. Step 2: Convert to fraction form
    486,709.79/730,090.67 = 149,981.72/x
  3. Step 3: Cross multiply
    486,709.79x = 730,090.67 × 149,981.72
  4. Step 4: Simplify right side
    486,709.79x = 109,500,250,042.19
  5. Step 5: Solve for x
    x = 109,500,250,042.19/486,709.79
  6. Step 6: Final answer
    x = 224,980.58

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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.