Home / 268,948.54-403,421.58-128,280.70

Finding the Fourth Proportional to 268,948.54, 403,421.58 and 128,280.70

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Solution

The fourth proportional to 268,948.54, 403,421.58 and 128,280.70 is: 192,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,948.54 : 403,421.58 = 128,280.70 : x
  2. Step 2: Convert to fraction form
    268,948.54/403,421.58 = 128,280.70/x
  3. Step 3: Cross multiply
    268,948.54x = 403,421.58 × 128,280.70
  4. Step 4: Simplify right side
    268,948.54x = 51,751,202,677.51
  5. Step 5: Solve for x
    x = 51,751,202,677.51/268,948.54
  6. Step 6: Final answer
    x = 192,420.46

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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.