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Finding the Fourth Proportional to 374,681.80, 562,022.70 and 121,986.10

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Solution

The fourth proportional to 374,681.80, 562,022.70 and 121,986.10 is: 182,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,681.80 : 562,022.70 = 121,986.10 : x
  2. Step 2: Convert to fraction form
    374,681.80/562,022.70 = 121,986.10/x
  3. Step 3: Cross multiply
    374,681.80x = 562,022.70 × 121,986.10
  4. Step 4: Simplify right side
    374,681.80x = 68,558,957,284.47
  5. Step 5: Solve for x
    x = 68,558,957,284.47/374,681.80
  6. Step 6: Final answer
    x = 182,979.15

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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.