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Finding the Fourth Proportional to 472,187.80, 708,281.70 and 272,405.35

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Solution

The fourth proportional to 472,187.80, 708,281.70 and 272,405.35 is: 408,608.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,187.80 : 708,281.70 = 272,405.35 : x
  2. Step 2: Convert to fraction form
    472,187.80/708,281.70 = 272,405.35/x
  3. Step 3: Cross multiply
    472,187.80x = 708,281.70 × 272,405.35
  4. Step 4: Simplify right side
    472,187.80x = 192,939,724,387.10
  5. Step 5: Solve for x
    x = 192,939,724,387.10/472,187.80
  6. Step 6: Final answer
    x = 408,608.03

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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.