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Finding the Fourth Proportional to 455,909.77, 684,061.49 and 245,505.79

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Solution

The fourth proportional to 455,909.77, 684,061.49 and 245,505.79 is: 368,364.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,909.77 : 684,061.49 = 245,505.79 : x
  2. Step 2: Convert to fraction form
    455,909.77/684,061.49 = 245,505.79/x
  3. Step 3: Cross multiply
    455,909.77x = 684,061.49 × 245,505.79
  4. Step 4: Simplify right side
    455,909.77x = 167,941,056,511.03
  5. Step 5: Solve for x
    x = 167,941,056,511.03/455,909.77
  6. Step 6: Final answer
    x = 368,364.68

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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.