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Finding the Fourth Proportional to 388,595.96, 536,203.02 and 218,825.72

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Solution

The fourth proportional to 388,595.96, 536,203.02 and 218,825.72 is: 301,946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,595.96 : 536,203.02 = 218,825.72 : x
  2. Step 2: Convert to fraction form
    388,595.96/536,203.02 = 218,825.72/x
  3. Step 3: Cross multiply
    388,595.96x = 536,203.02 × 218,825.72
  4. Step 4: Simplify right side
    388,595.96x = 117,335,011,917.67
  5. Step 5: Solve for x
    x = 117,335,011,917.67/388,595.96
  6. Step 6: Final answer
    x = 301,946.04

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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.