Home / 398,072.27-549,339.77-216,784.15

Finding the Fourth Proportional to 398,072.27, 549,339.77 and 216,784.15

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Solution

The fourth proportional to 398,072.27, 549,339.77 and 216,784.15 is: 299,162.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,072.27 : 549,339.77 = 216,784.15 : x
  2. Step 2: Convert to fraction form
    398,072.27/549,339.77 = 216,784.15/x
  3. Step 3: Cross multiply
    398,072.27x = 549,339.77 × 216,784.15
  4. Step 4: Simplify right side
    398,072.27x = 119,088,154,269.26
  5. Step 5: Solve for x
    x = 119,088,154,269.26/398,072.27
  6. Step 6: Final answer
    x = 299,162.14

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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.