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Finding the Fourth Proportional to 398,928.15, 550,445.52 and 237,798.24

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Solution

The fourth proportional to 398,928.15, 550,445.52 and 237,798.24 is: 328,116.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,928.15 : 550,445.52 = 237,798.24 : x
  2. Step 2: Convert to fraction form
    398,928.15/550,445.52 = 237,798.24/x
  3. Step 3: Cross multiply
    398,928.15x = 550,445.52 × 237,798.24
  4. Step 4: Simplify right side
    398,928.15x = 130,894,975,871.89
  5. Step 5: Solve for x
    x = 130,894,975,871.89/398,928.15
  6. Step 6: Final answer
    x = 328,116.67

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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.