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Finding the Fourth Proportional to 317,628.84, 438,328.67 and 174,398.16

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Solution

The fourth proportional to 317,628.84, 438,328.67 and 174,398.16 is: 240,669.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,628.84 : 438,328.67 = 174,398.16 : x
  2. Step 2: Convert to fraction form
    317,628.84/438,328.67 = 174,398.16/x
  3. Step 3: Cross multiply
    317,628.84x = 438,328.67 × 174,398.16
  4. Step 4: Simplify right side
    317,628.84x = 76,443,713,523.25
  5. Step 5: Solve for x
    x = 76,443,713,523.25/317,628.84
  6. Step 6: Final answer
    x = 240,669.94

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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.