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Finding the Fourth Proportional to 405,268.61, 607,574.81 and 168,788.30

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Solution

The fourth proportional to 405,268.61, 607,574.81 and 168,788.30 is: 253,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,268.61 : 607,574.81 = 168,788.30 : x
  2. Step 2: Convert to fraction form
    405,268.61/607,574.81 = 168,788.30/x
  3. Step 3: Cross multiply
    405,268.61x = 607,574.81 × 168,788.30
  4. Step 4: Simplify right side
    405,268.61x = 102,551,516,686.82
  5. Step 5: Solve for x
    x = 102,551,516,686.82/405,268.61
  6. Step 6: Final answer
    x = 253,045.80

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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.