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Finding the Fourth Proportional to 310,008.78, 427,782.56 and 174,011.56

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Solution

The fourth proportional to 310,008.78, 427,782.56 and 174,011.56 is: 240,119.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,008.78 : 427,782.56 = 174,011.56 : x
  2. Step 2: Convert to fraction form
    310,008.78/427,782.56 = 174,011.56/x
  3. Step 3: Cross multiply
    310,008.78x = 427,782.56 × 174,011.56
  4. Step 4: Simplify right side
    310,008.78x = 74,439,108,666.88
  5. Step 5: Solve for x
    x = 74,439,108,666.88/310,008.78
  6. Step 6: Final answer
    x = 240,119.36

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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.