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Finding the Fourth Proportional to 317,648.64, 438,355.60 and 174,417.82

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Solution

The fourth proportional to 317,648.64, 438,355.60 and 174,417.82 is: 240,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,648.64 : 438,355.60 = 174,417.82 : x
  2. Step 2: Convert to fraction form
    317,648.64/438,355.60 = 174,417.82/x
  3. Step 3: Cross multiply
    317,648.64x = 438,355.60 × 174,417.82
  4. Step 4: Simplify right side
    317,648.64x = 76,457,028,136.79
  5. Step 5: Solve for x
    x = 76,457,028,136.79/317,648.64
  6. Step 6: Final answer
    x = 240,696.85

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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.