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Finding the Fourth Proportional to 390,194.10, 584,888.58 and 190,267.47

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Solution

The fourth proportional to 390,194.10, 584,888.58 and 190,267.47 is: 285,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,194.10 : 584,888.58 = 190,267.47 : x
  2. Step 2: Convert to fraction form
    390,194.10/584,888.58 = 190,267.47/x
  3. Step 3: Cross multiply
    390,194.10x = 584,888.58 × 190,267.47
  4. Step 4: Simplify right side
    390,194.10x = 111,285,270,348.49
  5. Step 5: Solve for x
    x = 111,285,270,348.49/390,194.10
  6. Step 6: Final answer
    x = 285,204.90

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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.