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Finding the Fourth Proportional to 545,291.40, 817,967.61 and 166,224.45

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Solution

The fourth proportional to 545,291.40, 817,967.61 and 166,224.45 is: 249,345.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,291.40 : 817,967.61 = 166,224.45 : x
  2. Step 2: Convert to fraction form
    545,291.40/817,967.61 = 166,224.45/x
  3. Step 3: Cross multiply
    545,291.40x = 817,967.61 × 166,224.45
  4. Step 4: Simplify right side
    545,291.40x = 135,966,216,090.07
  5. Step 5: Solve for x
    x = 135,966,216,090.07/545,291.40
  6. Step 6: Final answer
    x = 249,345.98

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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.