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Finding the Fourth Proportional to 207,298, 310,934.65 and 121,956.81

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Solution

The fourth proportional to 207,298, 310,934.65 and 121,956.81 is: 182,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,298 : 310,934.65 = 121,956.81 : x
  2. Step 2: Convert to fraction form
    207,298/310,934.65 = 121,956.81/x
  3. Step 3: Cross multiply
    207,298x = 310,934.65 × 121,956.81
  4. Step 4: Simplify right side
    207,298x = 37,920,598,032.47
  5. Step 5: Solve for x
    x = 37,920,598,032.47/207,298
  6. Step 6: Final answer
    x = 182,927.95

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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.