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Finding the Fourth Proportional to 545,277.60, 752,475.96 and 315,866.16

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Solution

The fourth proportional to 545,277.60, 752,475.96 and 315,866.16 is: 435,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,277.60 : 752,475.96 = 315,866.16 : x
  2. Step 2: Convert to fraction form
    545,277.60/752,475.96 = 315,866.16/x
  3. Step 3: Cross multiply
    545,277.60x = 752,475.96 × 315,866.16
  4. Step 4: Simplify right side
    545,277.60x = 237,681,691,977.51
  5. Step 5: Solve for x
    x = 237,681,691,977.51/545,277.60
  6. Step 6: Final answer
    x = 435,891.17

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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.