Home / 289,242.04-434,142.92-139,587.68

Finding the Fourth Proportional to 289,242.04, 434,142.92 and 139,587.68

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Solution

The fourth proportional to 289,242.04, 434,142.92 and 139,587.68 is: 209,516.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,242.04 : 434,142.92 = 139,587.68 : x
  2. Step 2: Convert to fraction form
    289,242.04/434,142.92 = 139,587.68/x
  3. Step 3: Cross multiply
    289,242.04x = 434,142.92 × 139,587.68
  4. Step 4: Simplify right side
    289,242.04x = 60,601,000,820.51
  5. Step 5: Solve for x
    x = 60,601,000,820.51/289,242.04
  6. Step 6: Final answer
    x = 209,516.58

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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.