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Finding the Fourth Proportional to 231,501.78, 348,987.81 and 216,070.62

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Solution

The fourth proportional to 231,501.78, 348,987.81 and 216,070.62 is: 325,725.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,501.78 : 348,987.81 = 216,070.62 : x
  2. Step 2: Convert to fraction form
    231,501.78/348,987.81 = 216,070.62/x
  3. Step 3: Cross multiply
    231,501.78x = 348,987.81 × 216,070.62
  4. Step 4: Simplify right side
    231,501.78x = 75,406,012,479.14
  5. Step 5: Solve for x
    x = 75,406,012,479.14/231,501.78
  6. Step 6: Final answer
    x = 325,725.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.