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Finding the Fourth Proportional to 305,987.47, 458,653.06 and 147,998.59

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Solution

The fourth proportional to 305,987.47, 458,653.06 and 147,998.59 is: 221,839.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,987.47 : 458,653.06 = 147,998.59 : x
  2. Step 2: Convert to fraction form
    305,987.47/458,653.06 = 147,998.59/x
  3. Step 3: Cross multiply
    305,987.47x = 458,653.06 × 147,998.59
  4. Step 4: Simplify right side
    305,987.47x = 67,880,006,179.19
  5. Step 5: Solve for x
    x = 67,880,006,179.19/305,987.47
  6. Step 6: Final answer
    x = 221,839.17

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1.5x scale

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.