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Finding the Fourth Proportional to 508,661.76, 763,108.74 and 220,521.72

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Solution

The fourth proportional to 508,661.76, 763,108.74 and 220,521.72 is: 330,832.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,661.76 : 763,108.74 = 220,521.72 : x
  2. Step 2: Convert to fraction form
    508,661.76/763,108.74 = 220,521.72/x
  3. Step 3: Cross multiply
    508,661.76x = 763,108.74 × 220,521.72
  4. Step 4: Simplify right side
    508,661.76x = 168,282,051,891.83
  5. Step 5: Solve for x
    x = 168,282,051,891.83/508,661.76
  6. Step 6: Final answer
    x = 330,832.91

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1.5x scale

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.