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Finding the Fourth Proportional to 319,658.70, 480,654.45 and 268,337.10

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Solution

The fourth proportional to 319,658.70, 480,654.45 and 268,337.10 is: 403,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,658.70 : 480,654.45 = 268,337.10 : x
  2. Step 2: Convert to fraction form
    319,658.70/480,654.45 = 268,337.10/x
  3. Step 3: Cross multiply
    319,658.70x = 480,654.45 × 268,337.10
  4. Step 4: Simplify right side
    319,658.70x = 128,977,421,215.10
  5. Step 5: Solve for x
    x = 128,977,421,215.10/319,658.70
  6. Step 6: Final answer
    x = 403,484.78

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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.