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Finding the Fourth Proportional to 545,909.40, 753,344.79 and 304,186.85

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Solution

The fourth proportional to 545,909.40, 753,344.79 and 304,186.85 is: 419,772.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,909.40 : 753,344.79 = 304,186.85 : x
  2. Step 2: Convert to fraction form
    545,909.40/753,344.79 = 304,186.85/x
  3. Step 3: Cross multiply
    545,909.40x = 753,344.79 × 304,186.85
  4. Step 4: Simplify right side
    545,909.40x = 229,157,574,867.29
  5. Step 5: Solve for x
    x = 229,157,574,867.29/545,909.40
  6. Step 6: Final answer
    x = 419,772.17

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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.