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Finding the Fourth Proportional to 398,005.02, 549,219.15 and 225,926.46

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Solution

The fourth proportional to 398,005.02, 549,219.15 and 225,926.46 is: 311,762.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,005.02 : 549,219.15 = 225,926.46 : x
  2. Step 2: Convert to fraction form
    398,005.02/549,219.15 = 225,926.46/x
  3. Step 3: Cross multiply
    398,005.02x = 549,219.15 × 225,926.46
  4. Step 4: Simplify right side
    398,005.02x = 124,083,138,323.71
  5. Step 5: Solve for x
    x = 124,083,138,323.71/398,005.02
  6. Step 6: Final answer
    x = 311,762.75

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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.