Home / 259,987,664.71-390,025,340.88-87,423,457.60

Finding the Fourth Proportional to 259,987,664.71, 390,025,340.88 and 87,423,457.60

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Solution

The fourth proportional to 259,987,664.71, 390,025,340.88 and 87,423,457.60 is: 131,149,929.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,987,664.71 : 390,025,340.88 = 87,423,457.60 : x
  2. Step 2: Convert to fraction form
    259,987,664.71/390,025,340.88 = 87,423,457.60/x
  3. Step 3: Cross multiply
    259,987,664.71x = 390,025,340.88 × 87,423,457.60
  4. Step 4: Simplify right side
    259,987,664.71x = 34,097,363,851,348,224
  5. Step 5: Solve for x
    x = 34,097,363,851,348,224/259,987,664.71
  6. Step 6: Final answer
    x = 131,149,929.32

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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.