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Finding the Fourth Proportional to 317,662.64, 438,371.40 and 174,421.42

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Solution

The fourth proportional to 317,662.64, 438,371.40 and 174,421.42 is: 240,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,662.64 : 438,371.40 = 174,421.42 : x
  2. Step 2: Convert to fraction form
    317,662.64/438,371.40 = 174,421.42/x
  3. Step 3: Cross multiply
    317,662.64x = 438,371.40 × 174,421.42
  4. Step 4: Simplify right side
    317,662.64x = 76,461,362,075.39
  5. Step 5: Solve for x
    x = 76,461,362,075.39/317,662.64
  6. Step 6: Final answer
    x = 240,699.89

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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.