Home / 398,277.12-549,253.20-290,676.72

Finding the Fourth Proportional to 398,277.12, 549,253.20 and 290,676.72

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Solution

The fourth proportional to 398,277.12, 549,253.20 and 290,676.72 is: 400,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,277.12 : 549,253.20 = 290,676.72 : x
  2. Step 2: Convert to fraction form
    398,277.12/549,253.20 = 290,676.72/x
  3. Step 3: Cross multiply
    398,277.12x = 549,253.20 × 290,676.72
  4. Step 4: Simplify right side
    398,277.12x = 159,655,118,625.50
  5. Step 5: Solve for x
    x = 159,655,118,625.50/398,277.12
  6. Step 6: Final answer
    x = 400,864.40

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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.