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Finding the Fourth Proportional to 517,303.25, 775,987.68 and 162,331.28

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Solution

The fourth proportional to 517,303.25, 775,987.68 and 162,331.28 is: 243,507.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,303.25 : 775,987.68 = 162,331.28 : x
  2. Step 2: Convert to fraction form
    517,303.25/775,987.68 = 162,331.28/x
  3. Step 3: Cross multiply
    517,303.25x = 775,987.68 × 162,331.28
  4. Step 4: Simplify right side
    517,303.25x = 125,967,075,298.60
  5. Step 5: Solve for x
    x = 125,967,075,298.60/517,303.25
  6. Step 6: Final answer
    x = 243,507.22

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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.