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Finding the Fourth Proportional to 545,078.65, 817,555.59 and 145,750.56

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Solution

The fourth proportional to 545,078.65, 817,555.59 and 145,750.56 is: 218,609.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,078.65 : 817,555.59 = 145,750.56 : x
  2. Step 2: Convert to fraction form
    545,078.65/817,555.59 = 145,750.56/x
  3. Step 3: Cross multiply
    545,078.65x = 817,555.59 × 145,750.56
  4. Step 4: Simplify right side
    545,078.65x = 119,159,184,527.07
  5. Step 5: Solve for x
    x = 119,159,184,527.07/545,078.65
  6. Step 6: Final answer
    x = 218,609.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.