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Finding the Fourth Proportional to 378,053.46, 521,725.59 and 216,937.98

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Solution

The fourth proportional to 378,053.46, 521,725.59 and 216,937.98 is: 299,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,053.46 : 521,725.59 = 216,937.98 : x
  2. Step 2: Convert to fraction form
    378,053.46/521,725.59 = 216,937.98/x
  3. Step 3: Cross multiply
    378,053.46x = 521,725.59 × 216,937.98
  4. Step 4: Simplify right side
    378,053.46x = 113,182,095,608.91
  5. Step 5: Solve for x
    x = 113,182,095,608.91/378,053.46
  6. Step 6: Final answer
    x = 299,381.19

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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.