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Finding the Fourth Proportional to 379,477.12, 523,689.28 and 207,404.64

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Solution

The fourth proportional to 379,477.12, 523,689.28 and 207,404.64 is: 286,224.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,477.12 : 523,689.28 = 207,404.64 : x
  2. Step 2: Convert to fraction form
    379,477.12/523,689.28 = 207,404.64/x
  3. Step 3: Cross multiply
    379,477.12x = 523,689.28 × 207,404.64
  4. Step 4: Simplify right side
    379,477.12x = 108,615,586,590.26
  5. Step 5: Solve for x
    x = 108,615,586,590.26/379,477.12
  6. Step 6: Final answer
    x = 286,224.34

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1.5x scale

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.