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Finding the Fourth Proportional to 352,893.84, 487,051.56 and 257,715.60

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Solution

The fourth proportional to 352,893.84, 487,051.56 and 257,715.60 is: 355,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,893.84 : 487,051.56 = 257,715.60 : x
  2. Step 2: Convert to fraction form
    352,893.84/487,051.56 = 257,715.60/x
  3. Step 3: Cross multiply
    352,893.84x = 487,051.56 × 257,715.60
  4. Step 4: Simplify right side
    352,893.84x = 125,520,785,016.34
  5. Step 5: Solve for x
    x = 125,520,785,016.34/352,893.84
  6. Step 6: Final answer
    x = 355,689.93

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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.