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Finding the Fourth Proportional to 618,132.60, 926,756.10 and 238,728.60

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Solution

The fourth proportional to 618,132.60, 926,756.10 and 238,728.60 is: 357,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,132.60 : 926,756.10 = 238,728.60 : x
  2. Step 2: Convert to fraction form
    618,132.60/926,756.10 = 238,728.60/x
  3. Step 3: Cross multiply
    618,132.60x = 926,756.10 × 238,728.60
  4. Step 4: Simplify right side
    618,132.60x = 221,243,186,294.46
  5. Step 5: Solve for x
    x = 221,243,186,294.46/618,132.60
  6. Step 6: Final answer
    x = 357,921.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.