Home / 319,123.20-478,281.60-161,395.20

Finding the Fourth Proportional to 319,123.20, 478,281.60 and 161,395.20

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Solution

The fourth proportional to 319,123.20, 478,281.60 and 161,395.20 is: 241,888.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,123.20 : 478,281.60 = 161,395.20 : x
  2. Step 2: Convert to fraction form
    319,123.20/478,281.60 = 161,395.20/x
  3. Step 3: Cross multiply
    319,123.20x = 478,281.60 × 161,395.20
  4. Step 4: Simplify right side
    319,123.20x = 77,192,354,488.32
  5. Step 5: Solve for x
    x = 77,192,354,488.32/319,123.20
  6. Step 6: Final answer
    x = 241,888.88

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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.