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Finding the Fourth Proportional to 388,573.84, 536,217.48 and 216,487.76

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Solution

The fourth proportional to 388,573.84, 536,217.48 and 216,487.76 is: 298,745.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,573.84 : 536,217.48 = 216,487.76 : x
  2. Step 2: Convert to fraction form
    388,573.84/536,217.48 = 216,487.76/x
  3. Step 3: Cross multiply
    388,573.84x = 536,217.48 × 216,487.76
  4. Step 4: Simplify right side
    388,573.84x = 116,084,521,118.05
  5. Step 5: Solve for x
    x = 116,084,521,118.05/388,573.84
  6. Step 6: Final answer
    x = 298,745.08

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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.