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Finding the Fourth Proportional to 312,281.88, 430,923.89 and 176,348.90

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Solution

The fourth proportional to 312,281.88, 430,923.89 and 176,348.90 is: 243,347.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,281.88 : 430,923.89 = 176,348.90 : x
  2. Step 2: Convert to fraction form
    312,281.88/430,923.89 = 176,348.90/x
  3. Step 3: Cross multiply
    312,281.88x = 430,923.89 × 176,348.90
  4. Step 4: Simplify right side
    312,281.88x = 75,992,953,985.22
  5. Step 5: Solve for x
    x = 75,992,953,985.22/312,281.88
  6. Step 6: Final answer
    x = 243,347.31

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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.