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Finding the Fourth Proportional to 354,003.87, 488,302.16 and 210,656.91

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Solution

The fourth proportional to 354,003.87, 488,302.16 and 210,656.91 is: 290,573.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,003.87 : 488,302.16 = 210,656.91 : x
  2. Step 2: Convert to fraction form
    354,003.87/488,302.16 = 210,656.91/x
  3. Step 3: Cross multiply
    354,003.87x = 488,302.16 × 210,656.91
  4. Step 4: Simplify right side
    354,003.87x = 102,864,223,118.64
  5. Step 5: Solve for x
    x = 102,864,223,118.64/354,003.87
  6. Step 6: Final answer
    x = 290,573.72

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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.