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Finding the Fourth Proportional to 330,642.28, 495,888.90 and 93,979.72

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Solution

The fourth proportional to 330,642.28, 495,888.90 and 93,979.72 is: 140,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,642.28 : 495,888.90 = 93,979.72 : x
  2. Step 2: Convert to fraction form
    330,642.28/495,888.90 = 93,979.72/x
  3. Step 3: Cross multiply
    330,642.28x = 495,888.90 × 93,979.72
  4. Step 4: Simplify right side
    330,642.28x = 46,603,499,973.11
  5. Step 5: Solve for x
    x = 46,603,499,973.11/330,642.28
  6. Step 6: Final answer
    x = 140,948.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.