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Finding the Fourth Proportional to 328,730.40, 493,111.80 and 171,266.40

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Solution

The fourth proportional to 328,730.40, 493,111.80 and 171,266.40 is: 256,908.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,730.40 : 493,111.80 = 171,266.40 : x
  2. Step 2: Convert to fraction form
    328,730.40/493,111.80 = 171,266.40/x
  3. Step 3: Cross multiply
    328,730.40x = 493,111.80 × 171,266.40
  4. Step 4: Simplify right side
    328,730.40x = 84,453,482,783.52
  5. Step 5: Solve for x
    x = 84,453,482,783.52/328,730.40
  6. Step 6: Final answer
    x = 256,908.04

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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.