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Finding the Fourth Proportional to 312,042.07, 430,616.76 and 168,801.76

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Solution

The fourth proportional to 312,042.07, 430,616.76 and 168,801.76 is: 232,945.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,042.07 : 430,616.76 = 168,801.76 : x
  2. Step 2: Convert to fraction form
    312,042.07/430,616.76 = 168,801.76/x
  3. Step 3: Cross multiply
    312,042.07x = 430,616.76 × 168,801.76
  4. Step 4: Simplify right side
    312,042.07x = 72,688,866,973.50
  5. Step 5: Solve for x
    x = 72,688,866,973.50/312,042.07
  6. Step 6: Final answer
    x = 232,945.73

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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.