Home / 398,012.43-549,242.57-216,719.85

Finding the Fourth Proportional to 398,012.43, 549,242.57 and 216,719.85

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Solution

The fourth proportional to 398,012.43, 549,242.57 and 216,719.85 is: 299,065.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,012.43 : 549,242.57 = 216,719.85 : x
  2. Step 2: Convert to fraction form
    398,012.43/549,242.57 = 216,719.85/x
  3. Step 3: Cross multiply
    398,012.43x = 549,242.57 × 216,719.85
  4. Step 4: Simplify right side
    398,012.43x = 119,031,769,985.47
  5. Step 5: Solve for x
    x = 119,031,769,985.47/398,012.43
  6. Step 6: Final answer
    x = 299,065.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.