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Finding the Fourth Proportional to 398,287.93, 549,634.30 and 216,999.30

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Solution

The fourth proportional to 398,287.93, 549,634.30 and 216,999.30 is: 299,457.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,287.93 : 549,634.30 = 216,999.30 : x
  2. Step 2: Convert to fraction form
    398,287.93/549,634.30 = 216,999.30/x
  3. Step 3: Cross multiply
    398,287.93x = 549,634.30 × 216,999.30
  4. Step 4: Simplify right side
    398,287.93x = 119,270,258,355.99
  5. Step 5: Solve for x
    x = 119,270,258,355.99/398,287.93
  6. Step 6: Final answer
    x = 299,457.38

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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.