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Finding the Fourth Proportional to 398,323.00, 549,678.79 and 217,036.43

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Solution

The fourth proportional to 398,323.00, 549,678.79 and 217,036.43 is: 299,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,323.00 : 549,678.79 = 217,036.43 : x
  2. Step 2: Convert to fraction form
    398,323.00/549,678.79 = 217,036.43/x
  3. Step 3: Cross multiply
    398,323.00x = 549,678.79 × 217,036.43
  4. Step 4: Simplify right side
    398,323.00x = 119,300,321,812.52
  5. Step 5: Solve for x
    x = 119,300,321,812.52/398,323.00
  6. Step 6: Final answer
    x = 299,506.48

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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.