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Finding the Fourth Proportional to 354,117.30, 488,681.90 and 192,972.30

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Solution

The fourth proportional to 354,117.30, 488,681.90 and 192,972.30 is: 266,301.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,117.30 : 488,681.90 = 192,972.30 : x
  2. Step 2: Convert to fraction form
    354,117.30/488,681.90 = 192,972.30/x
  3. Step 3: Cross multiply
    354,117.30x = 488,681.90 × 192,972.30
  4. Step 4: Simplify right side
    354,117.30x = 94,302,070,211.37
  5. Step 5: Solve for x
    x = 94,302,070,211.37/354,117.30
  6. Step 6: Final answer
    x = 266,301.79

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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.