Home / 257,632.04-386,559.30-139,386.62

Finding the Fourth Proportional to 257,632.04, 386,559.30 and 139,386.62

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Solution

The fourth proportional to 257,632.04, 386,559.30 and 139,386.62 is: 209,140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,632.04 : 386,559.30 = 139,386.62 : x
  2. Step 2: Convert to fraction form
    257,632.04/386,559.30 = 139,386.62/x
  3. Step 3: Cross multiply
    257,632.04x = 386,559.30 × 139,386.62
  4. Step 4: Simplify right side
    257,632.04x = 53,881,194,256.57
  5. Step 5: Solve for x
    x = 53,881,194,256.57/257,632.04
  6. Step 6: Final answer
    x = 209,140.11

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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.