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Finding the Fourth Proportional to 283,156.32, 390,593.20 and 176,988

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Solution

The fourth proportional to 283,156.32, 390,593.20 and 176,988 is: 244,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,156.32 : 390,593.20 = 176,988 : x
  2. Step 2: Convert to fraction form
    283,156.32/390,593.20 = 176,988/x
  3. Step 3: Cross multiply
    283,156.32x = 390,593.20 × 176,988
  4. Step 4: Simplify right side
    283,156.32x = 69,130,309,281.60
  5. Step 5: Solve for x
    x = 69,130,309,281.60/283,156.32
  6. Step 6: Final answer
    x = 244,141.86

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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.