Home / 398,025.10-549,266.74-216,739.18

Finding the Fourth Proportional to 398,025.10, 549,266.74 and 216,739.18

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Solution

The fourth proportional to 398,025.10, 549,266.74 and 216,739.18 is: 299,095.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,025.10 : 549,266.74 = 216,739.18 : x
  2. Step 2: Convert to fraction form
    398,025.10/549,266.74 = 216,739.18/x
  3. Step 3: Cross multiply
    398,025.10x = 549,266.74 × 216,739.18
  4. Step 4: Simplify right side
    398,025.10x = 119,047,622,828.87
  5. Step 5: Solve for x
    x = 119,047,622,828.87/398,025.10
  6. Step 6: Final answer
    x = 299,095.77

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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.