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Finding the Fourth Proportional to 208,547.30, 312,820.95 and 119,973.80

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Solution

The fourth proportional to 208,547.30, 312,820.95 and 119,973.80 is: 179,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,547.30 : 312,820.95 = 119,973.80 : x
  2. Step 2: Convert to fraction form
    208,547.30/312,820.95 = 119,973.80/x
  3. Step 3: Cross multiply
    208,547.30x = 312,820.95 × 119,973.80
  4. Step 4: Simplify right side
    208,547.30x = 37,530,318,091.11
  5. Step 5: Solve for x
    x = 37,530,318,091.11/208,547.30
  6. Step 6: Final answer
    x = 179,960.70

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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.