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Finding the Fourth Proportional to 353,345.89, 487,630.16 and 202,472.05

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Solution

The fourth proportional to 353,345.89, 487,630.16 and 202,472.05 is: 279,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,345.89 : 487,630.16 = 202,472.05 : x
  2. Step 2: Convert to fraction form
    353,345.89/487,630.16 = 202,472.05/x
  3. Step 3: Cross multiply
    353,345.89x = 487,630.16 × 202,472.05
  4. Step 4: Simplify right side
    353,345.89x = 98,731,477,124.67
  5. Step 5: Solve for x
    x = 98,731,477,124.67/353,345.89
  6. Step 6: Final answer
    x = 279,418.78

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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.