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Finding the Fourth Proportional to 545,863.34, 753,281.38 and 304,140.71

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Solution

The fourth proportional to 545,863.34, 753,281.38 and 304,140.71 is: 419,708.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,863.34 : 753,281.38 = 304,140.71 : x
  2. Step 2: Convert to fraction form
    545,863.34/753,281.38 = 304,140.71/x
  3. Step 3: Cross multiply
    545,863.34x = 753,281.38 × 304,140.71
  4. Step 4: Simplify right side
    545,863.34x = 229,103,533,742.98
  5. Step 5: Solve for x
    x = 229,103,533,742.98/545,863.34
  6. Step 6: Final answer
    x = 419,708.59

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Double scale
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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.