Home / 268,297.10-402,445.65-81,284.30

Finding the Fourth Proportional to 268,297.10, 402,445.65 and 81,284.30

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Solution

The fourth proportional to 268,297.10, 402,445.65 and 81,284.30 is: 121,926.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,297.10 : 402,445.65 = 81,284.30 : x
  2. Step 2: Convert to fraction form
    268,297.10/402,445.65 = 81,284.30/x
  3. Step 3: Cross multiply
    268,297.10x = 402,445.65 × 81,284.30
  4. Step 4: Simplify right side
    268,297.10x = 32,712,512,948.30
  5. Step 5: Solve for x
    x = 32,712,512,948.30/268,297.10
  6. Step 6: Final answer
    x = 121,926.45

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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.