Home / 268,388,457.40-402,056,558.64-139,080,890.08

Finding the Fourth Proportional to 268,388,457.40, 402,056,558.64 and 139,080,890.08

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Solution

The fourth proportional to 268,388,457.40, 402,056,558.64 and 139,080,890.08 is: 208,348,691.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,388,457.40 : 402,056,558.64 = 139,080,890.08 : x
  2. Step 2: Convert to fraction form
    268,388,457.40/402,056,558.64 = 139,080,890.08/x
  3. Step 3: Cross multiply
    268,388,457.40x = 402,056,558.64 × 139,080,890.08
  4. Step 4: Simplify right side
    268,388,457.40x = 55,918,384,038,152,920
  5. Step 5: Solve for x
    x = 55,918,384,038,152,920/268,388,457.40
  6. Step 6: Final answer
    x = 208,348,691.97

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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.