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Finding the Fourth Proportional to 398,347.23, 549,712.06 and 217,060.73

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Solution

The fourth proportional to 398,347.23, 549,712.06 and 217,060.73 is: 299,539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,347.23 : 549,712.06 = 217,060.73 : x
  2. Step 2: Convert to fraction form
    398,347.23/549,712.06 = 217,060.73/x
  3. Step 3: Cross multiply
    398,347.23x = 549,712.06 × 217,060.73
  4. Step 4: Simplify right side
    398,347.23x = 119,320,901,033.40
  5. Step 5: Solve for x
    x = 119,320,901,033.40/398,347.23
  6. Step 6: Final answer
    x = 299,539.93

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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.