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Finding the Fourth Proportional to 398,351.70, 549,685.98 and 235,004.76

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Solution

The fourth proportional to 398,351.70, 549,685.98 and 235,004.76 is: 324,283.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,351.70 : 549,685.98 = 235,004.76 : x
  2. Step 2: Convert to fraction form
    398,351.70/549,685.98 = 235,004.76/x
  3. Step 3: Cross multiply
    398,351.70x = 549,685.98 × 235,004.76
  4. Step 4: Simplify right side
    398,351.70x = 129,178,821,805.27
  5. Step 5: Solve for x
    x = 129,178,821,805.27/398,351.70
  6. Step 6: Final answer
    x = 324,283.35

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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.