Home / 319,011.12-478,491.57-139,092.30

Finding the Fourth Proportional to 319,011.12, 478,491.57 and 139,092.30

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Solution

The fourth proportional to 319,011.12, 478,491.57 and 139,092.30 is: 208,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,011.12 : 478,491.57 = 139,092.30 : x
  2. Step 2: Convert to fraction form
    319,011.12/478,491.57 = 139,092.30/x
  3. Step 3: Cross multiply
    319,011.12x = 478,491.57 × 139,092.30
  4. Step 4: Simplify right side
    319,011.12x = 66,554,493,001.91
  5. Step 5: Solve for x
    x = 66,554,493,001.91/319,011.12
  6. Step 6: Final answer
    x = 208,627.50

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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.