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Finding the Fourth Proportional to 398,218.05, 549,534.57 and 216,932.16

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Solution

The fourth proportional to 398,218.05, 549,534.57 and 216,932.16 is: 299,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,218.05 : 549,534.57 = 216,932.16 : x
  2. Step 2: Convert to fraction form
    398,218.05/549,534.57 = 216,932.16/x
  3. Step 3: Cross multiply
    398,218.05x = 549,534.57 × 216,932.16
  4. Step 4: Simplify right side
    398,218.05x = 119,211,721,264.77
  5. Step 5: Solve for x
    x = 119,211,721,264.77/398,218.05
  6. Step 6: Final answer
    x = 299,362.93

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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.