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Finding the Fourth Proportional to 398,144.57, 549,420.57 and 216,855.63

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Solution

The fourth proportional to 398,144.57, 549,420.57 and 216,855.63 is: 299,250.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,144.57 : 549,420.57 = 216,855.63 : x
  2. Step 2: Convert to fraction form
    398,144.57/549,420.57 = 216,855.63/x
  3. Step 3: Cross multiply
    398,144.57x = 549,420.57 × 216,855.63
  4. Step 4: Simplify right side
    398,144.57x = 119,144,943,842.31
  5. Step 5: Solve for x
    x = 119,144,943,842.31/398,144.57
  6. Step 6: Final answer
    x = 299,250.46

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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.