Home / 319,429.07-478,670.25-129,658.52

Finding the Fourth Proportional to 319,429.07, 478,670.25 and 129,658.52

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Solution

The fourth proportional to 319,429.07, 478,670.25 and 129,658.52 is: 194,295.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,429.07 : 478,670.25 = 129,658.52 : x
  2. Step 2: Convert to fraction form
    319,429.07/478,670.25 = 129,658.52/x
  3. Step 3: Cross multiply
    319,429.07x = 478,670.25 × 129,658.52
  4. Step 4: Simplify right side
    319,429.07x = 62,063,677,865.93
  5. Step 5: Solve for x
    x = 62,063,677,865.93/319,429.07
  6. Step 6: Final answer
    x = 194,295.65

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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.