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Finding the Fourth Proportional to 317,660.63, 438,368.64 and 174,419.42

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Solution

The fourth proportional to 317,660.63, 438,368.64 and 174,419.42 is: 240,697.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,660.63 : 438,368.64 = 174,419.42 : x
  2. Step 2: Convert to fraction form
    317,660.63/438,368.64 = 174,419.42/x
  3. Step 3: Cross multiply
    317,660.63x = 438,368.64 × 174,419.42
  4. Step 4: Simplify right side
    317,660.63x = 76,460,003,934.99
  5. Step 5: Solve for x
    x = 76,460,003,934.99/317,660.63
  6. Step 6: Final answer
    x = 240,697.14

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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.