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Finding the Fourth Proportional to 245,430.50, 368,204.99 and 85,483.04

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Solution

The fourth proportional to 245,430.50, 368,204.99 and 85,483.04 is: 128,245.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,430.50 : 368,204.99 = 85,483.04 : x
  2. Step 2: Convert to fraction form
    245,430.50/368,204.99 = 85,483.04/x
  3. Step 3: Cross multiply
    245,430.50x = 368,204.99 × 85,483.04
  4. Step 4: Simplify right side
    245,430.50x = 31,475,279,619.93
  5. Step 5: Solve for x
    x = 31,475,279,619.93/245,430.50
  6. Step 6: Final answer
    x = 128,245.19

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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.