Home / 290,123.20-434,493.60-178,148.80

Finding the Fourth Proportional to 290,123.20, 434,493.60 and 178,148.80

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Solution

The fourth proportional to 290,123.20, 434,493.60 and 178,148.80 is: 266,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,123.20 : 434,493.60 = 178,148.80 : x
  2. Step 2: Convert to fraction form
    290,123.20/434,493.60 = 178,148.80/x
  3. Step 3: Cross multiply
    290,123.20x = 434,493.60 × 178,148.80
  4. Step 4: Simplify right side
    290,123.20x = 77,404,513,447.68
  5. Step 5: Solve for x
    x = 77,404,513,447.68/290,123.20
  6. Step 6: Final answer
    x = 266,798.77

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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.