Home / 398,395.07-549,771.23-217,103.30

Finding the Fourth Proportional to 398,395.07, 549,771.23 and 217,103.30

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Solution

The fourth proportional to 398,395.07, 549,771.23 and 217,103.30 is: 299,594.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,395.07 : 549,771.23 = 217,103.30 : x
  2. Step 2: Convert to fraction form
    398,395.07/549,771.23 = 217,103.30/x
  3. Step 3: Cross multiply
    398,395.07x = 549,771.23 × 217,103.30
  4. Step 4: Simplify right side
    398,395.07x = 119,357,148,278.06
  5. Step 5: Solve for x
    x = 119,357,148,278.06/398,395.07
  6. Step 6: Final answer
    x = 299,594.94

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1.5x scale

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.