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Finding the Fourth Proportional to 390,445.50, 585,673.36 and 106,150.08

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Solution

The fourth proportional to 390,445.50, 585,673.36 and 106,150.08 is: 159,226.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,445.50 : 585,673.36 = 106,150.08 : x
  2. Step 2: Convert to fraction form
    390,445.50/585,673.36 = 106,150.08/x
  3. Step 3: Cross multiply
    390,445.50x = 585,673.36 × 106,150.08
  4. Step 4: Simplify right side
    390,445.50x = 62,169,274,017.87
  5. Step 5: Solve for x
    x = 62,169,274,017.87/390,445.50
  6. Step 6: Final answer
    x = 159,226.51

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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.