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Finding the Fourth Proportional to 398,254.44, 549,572.18 and 216,965.51

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Solution

The fourth proportional to 398,254.44, 549,572.18 and 216,965.51 is: 299,402.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,254.44 : 549,572.18 = 216,965.51 : x
  2. Step 2: Convert to fraction form
    398,254.44/549,572.18 = 216,965.51/x
  3. Step 3: Cross multiply
    398,254.44x = 549,572.18 × 216,965.51
  4. Step 4: Simplify right side
    398,254.44x = 119,238,204,482.82
  5. Step 5: Solve for x
    x = 119,238,204,482.82/398,254.44
  6. Step 6: Final answer
    x = 299,402.07

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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.