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Finding the Fourth Proportional to 545,339.70, 818,009.55 and 146,042.10

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Solution

The fourth proportional to 545,339.70, 818,009.55 and 146,042.10 is: 219,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,339.70 : 818,009.55 = 146,042.10 : x
  2. Step 2: Convert to fraction form
    545,339.70/818,009.55 = 146,042.10/x
  3. Step 3: Cross multiply
    545,339.70x = 818,009.55 × 146,042.10
  4. Step 4: Simplify right side
    545,339.70x = 119,463,832,502.06
  5. Step 5: Solve for x
    x = 119,463,832,502.06/545,339.70
  6. Step 6: Final answer
    x = 219,063.15

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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.