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Finding the Fourth Proportional to 209,070.72, 314,228.16 and 98,340.48

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Solution

The fourth proportional to 209,070.72, 314,228.16 and 98,340.48 is: 147,803.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,070.72 : 314,228.16 = 98,340.48 : x
  2. Step 2: Convert to fraction form
    209,070.72/314,228.16 = 98,340.48/x
  3. Step 3: Cross multiply
    209,070.72x = 314,228.16 × 98,340.48
  4. Step 4: Simplify right side
    209,070.72x = 30,901,348,083.92
  5. Step 5: Solve for x
    x = 30,901,348,083.92/209,070.72
  6. Step 6: Final answer
    x = 147,803.33

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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.