Home / 398,417.06-549,799.51-217,125.10

Finding the Fourth Proportional to 398,417.06, 549,799.51 and 217,125.10

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Solution

The fourth proportional to 398,417.06, 549,799.51 and 217,125.10 is: 299,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,417.06 : 549,799.51 = 217,125.10 : x
  2. Step 2: Convert to fraction form
    398,417.06/549,799.51 = 217,125.10/x
  3. Step 3: Cross multiply
    398,417.06x = 549,799.51 × 217,125.10
  4. Step 4: Simplify right side
    398,417.06x = 119,375,273,588.70
  5. Step 5: Solve for x
    x = 119,375,273,588.70/398,417.06
  6. Step 6: Final answer
    x = 299,623.90

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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.