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Finding the Fourth Proportional to 471,814.07, 651,130.65 and 355,318.95

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Solution

The fourth proportional to 471,814.07, 651,130.65 and 355,318.95 is: 490,360.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,814.07 : 651,130.65 = 355,318.95 : x
  2. Step 2: Convert to fraction form
    471,814.07/651,130.65 = 355,318.95/x
  3. Step 3: Cross multiply
    471,814.07x = 651,130.65 × 355,318.95
  4. Step 4: Simplify right side
    471,814.07x = 231,359,061,312.56
  5. Step 5: Solve for x
    x = 231,359,061,312.56/471,814.07
  6. Step 6: Final answer
    x = 490,360.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.