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Finding the Fourth Proportional to 310,007.28, 427,780.49 and 174,010.05

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Solution

The fourth proportional to 310,007.28, 427,780.49 and 174,010.05 is: 240,117.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,007.28 : 427,780.49 = 174,010.05 : x
  2. Step 2: Convert to fraction form
    310,007.28/427,780.49 = 174,010.05/x
  3. Step 3: Cross multiply
    310,007.28x = 427,780.49 × 174,010.05
  4. Step 4: Simplify right side
    310,007.28x = 74,438,105,840.59
  5. Step 5: Solve for x
    x = 74,438,105,840.59/310,007.28
  6. Step 6: Final answer
    x = 240,117.29

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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.