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Finding the Fourth Proportional to 545,313.60, 752,525.64 and 315,902.16

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Solution

The fourth proportional to 545,313.60, 752,525.64 and 315,902.16 is: 435,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,313.60 : 752,525.64 = 315,902.16 : x
  2. Step 2: Convert to fraction form
    545,313.60/752,525.64 = 315,902.16/x
  3. Step 3: Cross multiply
    545,313.60x = 752,525.64 × 315,902.16
  4. Step 4: Simplify right side
    545,313.60x = 237,724,475,131.38
  5. Step 5: Solve for x
    x = 237,724,475,131.38/545,313.60
  6. Step 6: Final answer
    x = 435,940.85

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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.