Home / 320,683.84-442,513.56-217,107.34

Finding the Fourth Proportional to 320,683.84, 442,513.56 and 217,107.34

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Solution

The fourth proportional to 320,683.84, 442,513.56 and 217,107.34 is: 299,587.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,683.84 : 442,513.56 = 217,107.34 : x
  2. Step 2: Convert to fraction form
    320,683.84/442,513.56 = 217,107.34/x
  3. Step 3: Cross multiply
    320,683.84x = 442,513.56 × 217,107.34
  4. Step 4: Simplify right side
    320,683.84x = 96,072,941,925.53
  5. Step 5: Solve for x
    x = 96,072,941,925.53/320,683.84
  6. Step 6: Final answer
    x = 299,587.72

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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.