Home / 257,782.83-386,673.55-145,412.04

Finding the Fourth Proportional to 257,782.83, 386,673.55 and 145,412.04

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Solution

The fourth proportional to 257,782.83, 386,673.55 and 145,412.04 is: 218,117.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,782.83 : 386,673.55 = 145,412.04 : x
  2. Step 2: Convert to fraction form
    257,782.83/386,673.55 = 145,412.04/x
  3. Step 3: Cross multiply
    257,782.83x = 386,673.55 × 145,412.04
  4. Step 4: Simplify right side
    257,782.83x = 56,226,989,719.54
  5. Step 5: Solve for x
    x = 56,226,989,719.54/257,782.83
  6. Step 6: Final answer
    x = 218,117.67

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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.