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Finding the Fourth Proportional to 417,085.60, 625,628.40 and 239,938.60

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Solution

The fourth proportional to 417,085.60, 625,628.40 and 239,938.60 is: 359,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,085.60 : 625,628.40 = 239,938.60 : x
  2. Step 2: Convert to fraction form
    417,085.60/625,628.40 = 239,938.60/x
  3. Step 3: Cross multiply
    417,085.60x = 625,628.40 × 239,938.60
  4. Step 4: Simplify right side
    417,085.60x = 150,112,402,416.24
  5. Step 5: Solve for x
    x = 150,112,402,416.24/417,085.60
  6. Step 6: Final answer
    x = 359,907.90

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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.