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Finding the Fourth Proportional to 545,133.42, 817,642.62 and 145,814.49

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Solution

The fourth proportional to 545,133.42, 817,642.62 and 145,814.49 is: 218,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,133.42 : 817,642.62 = 145,814.49 : x
  2. Step 2: Convert to fraction form
    545,133.42/817,642.62 = 145,814.49/x
  3. Step 3: Cross multiply
    545,133.42x = 817,642.62 × 145,814.49
  4. Step 4: Simplify right side
    545,133.42x = 119,224,141,637.56
  5. Step 5: Solve for x
    x = 119,224,141,637.56/545,133.42
  6. Step 6: Final answer
    x = 218,706.35

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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.