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Finding the Fourth Proportional to 317,598.90, 438,291.45 and 174,372

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Solution

The fourth proportional to 317,598.90, 438,291.45 and 174,372 is: 240,636.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,598.90 : 438,291.45 = 174,372 : x
  2. Step 2: Convert to fraction form
    317,598.90/438,291.45 = 174,372/x
  3. Step 3: Cross multiply
    317,598.90x = 438,291.45 × 174,372
  4. Step 4: Simplify right side
    317,598.90x = 76,425,756,719.40
  5. Step 5: Solve for x
    x = 76,425,756,719.40/317,598.90
  6. Step 6: Final answer
    x = 240,636.09

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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.