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Finding the Fourth Proportional to 328,502.30, 492,753.45 and 141,878.30

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Solution

The fourth proportional to 328,502.30, 492,753.45 and 141,878.30 is: 212,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,502.30 : 492,753.45 = 141,878.30 : x
  2. Step 2: Convert to fraction form
    328,502.30/492,753.45 = 141,878.30/x
  3. Step 3: Cross multiply
    328,502.30x = 492,753.45 × 141,878.30
  4. Step 4: Simplify right side
    328,502.30x = 69,911,021,805.14
  5. Step 5: Solve for x
    x = 69,911,021,805.14/328,502.30
  6. Step 6: Final answer
    x = 212,817.45

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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.