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Finding the Fourth Proportional to 398,590.12, 550,069.14 and 245,597.32

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Solution

The fourth proportional to 398,590.12, 550,069.14 and 245,597.32 is: 338,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,590.12 : 550,069.14 = 245,597.32 : x
  2. Step 2: Convert to fraction form
    398,590.12/550,069.14 = 245,597.32/x
  3. Step 3: Cross multiply
    398,590.12x = 550,069.14 × 245,597.32
  4. Step 4: Simplify right side
    398,590.12x = 135,095,506,598.71
  5. Step 5: Solve for x
    x = 135,095,506,598.71/398,590.12
  6. Step 6: Final answer
    x = 338,933.41

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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.