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Finding the Fourth Proportional to 471,360.76, 707,111.49 and 218,666.79

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Solution

The fourth proportional to 471,360.76, 707,111.49 and 218,666.79 is: 328,032.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,360.76 : 707,111.49 = 218,666.79 : x
  2. Step 2: Convert to fraction form
    471,360.76/707,111.49 = 218,666.79/x
  3. Step 3: Cross multiply
    471,360.76x = 707,111.49 × 218,666.79
  4. Step 4: Simplify right side
    471,360.76x = 154,621,799,690.42
  5. Step 5: Solve for x
    x = 154,621,799,690.42/471,360.76
  6. Step 6: Final answer
    x = 328,032.82

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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.