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Finding the Fourth Proportional to 472,265.46, 651,720.60 and 257,404.86

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Solution

The fourth proportional to 472,265.46, 651,720.60 and 257,404.86 is: 355,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,265.46 : 651,720.60 = 257,404.86 : x
  2. Step 2: Convert to fraction form
    472,265.46/651,720.60 = 257,404.86/x
  3. Step 3: Cross multiply
    472,265.46x = 651,720.60 × 257,404.86
  4. Step 4: Simplify right side
    472,265.46x = 167,756,049,802.12
  5. Step 5: Solve for x
    x = 167,756,049,802.12/472,265.46
  6. Step 6: Final answer
    x = 355,215.58

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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.