Home / 289,325.04-434,268.06-139,670.64

Finding the Fourth Proportional to 289,325.04, 434,268.06 and 139,670.64

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Solution

The fourth proportional to 289,325.04, 434,268.06 and 139,670.64 is: 209,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,325.04 : 434,268.06 = 139,670.64 : x
  2. Step 2: Convert to fraction form
    289,325.04/434,268.06 = 139,670.64/x
  3. Step 3: Cross multiply
    289,325.04x = 434,268.06 × 139,670.64
  4. Step 4: Simplify right side
    289,325.04x = 60,654,497,871.76
  5. Step 5: Solve for x
    x = 60,654,497,871.76/289,325.04
  6. Step 6: Final answer
    x = 209,641.37

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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.