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Finding the Fourth Proportional to 557,529.92, 769,392.20 and 302,881.32

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Solution

The fourth proportional to 557,529.92, 769,392.20 and 302,881.32 is: 417,976.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,529.92 : 769,392.20 = 302,881.32 : x
  2. Step 2: Convert to fraction form
    557,529.92/769,392.20 = 302,881.32/x
  3. Step 3: Cross multiply
    557,529.92x = 769,392.20 × 302,881.32
  4. Step 4: Simplify right side
    557,529.92x = 233,034,525,133.70
  5. Step 5: Solve for x
    x = 233,034,525,133.70/557,529.92
  6. Step 6: Final answer
    x = 417,976.72

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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.