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Finding the Fourth Proportional to 310,828.59, 428,927.81 and 183,479.58

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Solution

The fourth proportional to 310,828.59, 428,927.81 and 183,479.58 is: 253,192.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,828.59 : 428,927.81 = 183,479.58 : x
  2. Step 2: Convert to fraction form
    310,828.59/428,927.81 = 183,479.58/x
  3. Step 3: Cross multiply
    310,828.59x = 428,927.81 × 183,479.58
  4. Step 4: Simplify right side
    310,828.59x = 78,699,493,511.72
  5. Step 5: Solve for x
    x = 78,699,493,511.72/310,828.59
  6. Step 6: Final answer
    x = 253,192.58

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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.