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Finding the Fourth Proportional to 215,302.40, 322,916.34 and 65,506.40

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Solution

The fourth proportional to 215,302.40, 322,916.34 and 65,506.40 is: 98,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,302.40 : 322,916.34 = 65,506.40 : x
  2. Step 2: Convert to fraction form
    215,302.40/322,916.34 = 65,506.40/x
  3. Step 3: Cross multiply
    215,302.40x = 322,916.34 × 65,506.40
  4. Step 4: Simplify right side
    215,302.40x = 21,153,086,934.58
  5. Step 5: Solve for x
    x = 21,153,086,934.58/215,302.40
  6. Step 6: Final answer
    x = 98,248.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.