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Finding the Fourth Proportional to 347,781.84, 479,931.72 and 188,805.84

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Solution

The fourth proportional to 347,781.84, 479,931.72 and 188,805.84 is: 260,548.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,781.84 : 479,931.72 = 188,805.84 : x
  2. Step 2: Convert to fraction form
    347,781.84/479,931.72 = 188,805.84/x
  3. Step 3: Cross multiply
    347,781.84x = 479,931.72 × 188,805.84
  4. Step 4: Simplify right side
    347,781.84x = 90,613,911,537.24
  5. Step 5: Solve for x
    x = 90,613,911,537.24/347,781.84
  6. Step 6: Final answer
    x = 260,548.14

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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.