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Finding the Fourth Proportional to 545,159.42, 817,681.62 and 145,840.52

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Solution

The fourth proportional to 545,159.42, 817,681.62 and 145,840.52 is: 218,745.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,159.42 : 817,681.62 = 145,840.52 : x
  2. Step 2: Convert to fraction form
    545,159.42/817,681.62 = 145,840.52/x
  3. Step 3: Cross multiply
    545,159.42x = 817,681.62 × 145,840.52
  4. Step 4: Simplify right side
    545,159.42x = 119,251,112,655.24
  5. Step 5: Solve for x
    x = 119,251,112,655.24/545,159.42
  6. Step 6: Final answer
    x = 218,745.39

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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.