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Finding the Fourth Proportional to 356,648.16, 491,890.56 and 303,110.40

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Solution

The fourth proportional to 356,648.16, 491,890.56 and 303,110.40 is: 418,051.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,648.16 : 491,890.56 = 303,110.40 : x
  2. Step 2: Convert to fraction form
    356,648.16/491,890.56 = 303,110.40/x
  3. Step 3: Cross multiply
    356,648.16x = 491,890.56 × 303,110.40
  4. Step 4: Simplify right side
    356,648.16x = 149,097,144,397.82
  5. Step 5: Solve for x
    x = 149,097,144,397.82/356,648.16
  6. Step 6: Final answer
    x = 418,051.07

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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.