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Finding the Fourth Proportional to 308,689.04, 426,045.40 and 181,364.56

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Solution

The fourth proportional to 308,689.04, 426,045.40 and 181,364.56 is: 250,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,689.04 : 426,045.40 = 181,364.56 : x
  2. Step 2: Convert to fraction form
    308,689.04/426,045.40 = 181,364.56/x
  3. Step 3: Cross multiply
    308,689.04x = 426,045.40 × 181,364.56
  4. Step 4: Simplify right side
    308,689.04x = 77,269,536,511.02
  5. Step 5: Solve for x
    x = 77,269,536,511.02/308,689.04
  6. Step 6: Final answer
    x = 250,315.13

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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.