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Finding the Fourth Proportional to 308,002.88, 425,039.48 and 172,038.76

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Solution

The fourth proportional to 308,002.88, 425,039.48 and 172,038.76 is: 237,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,002.88 : 425,039.48 = 172,038.76 : x
  2. Step 2: Convert to fraction form
    308,002.88/425,039.48 = 172,038.76/x
  3. Step 3: Cross multiply
    308,002.88x = 425,039.48 × 172,038.76
  4. Step 4: Simplify right side
    308,002.88x = 73,123,265,090.24
  5. Step 5: Solve for x
    x = 73,123,265,090.24/308,002.88
  6. Step 6: Final answer
    x = 237,410.98

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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.