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Finding the Fourth Proportional to 493,309.71, 680,767.35 and 266,955.21

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Solution

The fourth proportional to 493,309.71, 680,767.35 and 266,955.21 is: 368,398.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,309.71 : 680,767.35 = 266,955.21 : x
  2. Step 2: Convert to fraction form
    493,309.71/680,767.35 = 266,955.21/x
  3. Step 3: Cross multiply
    493,309.71x = 680,767.35 × 266,955.21
  4. Step 4: Simplify right side
    493,309.71x = 181,734,390,880.39
  5. Step 5: Solve for x
    x = 181,734,390,880.39/493,309.71
  6. Step 6: Final answer
    x = 368,398.16

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1.5x scale

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.