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Finding the Fourth Proportional to 351,358.56, 484,678.08 and 207,978.84

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Solution

The fourth proportional to 351,358.56, 484,678.08 and 207,978.84 is: 286,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,358.56 : 484,678.08 = 207,978.84 : x
  2. Step 2: Convert to fraction form
    351,358.56/484,678.08 = 207,978.84/x
  3. Step 3: Cross multiply
    351,358.56x = 484,678.08 × 207,978.84
  4. Step 4: Simplify right side
    351,358.56x = 100,802,784,851.83
  5. Step 5: Solve for x
    x = 100,802,784,851.83/351,358.56
  6. Step 6: Final answer
    x = 286,894.35

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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.