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Finding the Fourth Proportional to 518,665.84, 777,998.88 and 163,707.52

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Solution

The fourth proportional to 518,665.84, 777,998.88 and 163,707.52 is: 245,561.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,665.84 : 777,998.88 = 163,707.52 : x
  2. Step 2: Convert to fraction form
    518,665.84/777,998.88 = 163,707.52/x
  3. Step 3: Cross multiply
    518,665.84x = 777,998.88 × 163,707.52
  4. Step 4: Simplify right side
    518,665.84x = 127,364,267,207.58
  5. Step 5: Solve for x
    x = 127,364,267,207.58/518,665.84
  6. Step 6: Final answer
    x = 245,561.32

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Similar ratio
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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.