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Finding the Fourth Proportional to 289,590.52, 434,386.14 and 79,230.28

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Solution

The fourth proportional to 289,590.52, 434,386.14 and 79,230.28 is: 118,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,590.52 : 434,386.14 = 79,230.28 : x
  2. Step 2: Convert to fraction form
    289,590.52/434,386.14 = 79,230.28/x
  3. Step 3: Cross multiply
    289,590.52x = 434,386.14 × 79,230.28
  4. Step 4: Simplify right side
    289,590.52x = 34,416,535,500.32
  5. Step 5: Solve for x
    x = 34,416,535,500.32/289,590.52
  6. Step 6: Final answer
    x = 118,845.52

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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.