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Finding the Fourth Proportional to 317,789.50, 438,556.40 and 174,557.40

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Solution

The fourth proportional to 317,789.50, 438,556.40 and 174,557.40 is: 240,893.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,789.50 : 438,556.40 = 174,557.40 : x
  2. Step 2: Convert to fraction form
    317,789.50/438,556.40 = 174,557.40/x
  3. Step 3: Cross multiply
    317,789.50x = 438,556.40 × 174,557.40
  4. Step 4: Simplify right side
    317,789.50x = 76,553,264,937.36
  5. Step 5: Solve for x
    x = 76,553,264,937.36/317,789.50
  6. Step 6: Final answer
    x = 240,893.00

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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.