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Finding the Fourth Proportional to 220,967.94, 304,925.92 and 129,095.74

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Solution

The fourth proportional to 220,967.94, 304,925.92 and 129,095.74 is: 178,146.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,967.94 : 304,925.92 = 129,095.74 : x
  2. Step 2: Convert to fraction form
    220,967.94/304,925.92 = 129,095.74/x
  3. Step 3: Cross multiply
    220,967.94x = 304,925.92 × 129,095.74
  4. Step 4: Simplify right side
    220,967.94x = 39,364,636,059.59
  5. Step 5: Solve for x
    x = 39,364,636,059.59/220,967.94
  6. Step 6: Final answer
    x = 178,146.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.