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Finding the Fourth Proportional to 472,313.08, 708,479.34 and 191,638.36

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Solution

The fourth proportional to 472,313.08, 708,479.34 and 191,638.36 is: 287,461.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,313.08 : 708,479.34 = 191,638.36 : x
  2. Step 2: Convert to fraction form
    472,313.08/708,479.34 = 191,638.36/x
  3. Step 3: Cross multiply
    472,313.08x = 708,479.34 × 191,638.36
  4. Step 4: Simplify right side
    472,313.08x = 135,771,818,811.48
  5. Step 5: Solve for x
    x = 135,771,818,811.48/472,313.08
  6. Step 6: Final answer
    x = 287,461.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.