Home / 289,985.40-435,147.44-121,491.32

Finding the Fourth Proportional to 289,985.40, 435,147.44 and 121,491.32

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Solution

The fourth proportional to 289,985.40, 435,147.44 and 121,491.32 is: 182,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,985.40 : 435,147.44 = 121,491.32 : x
  2. Step 2: Convert to fraction form
    289,985.40/435,147.44 = 121,491.32/x
  3. Step 3: Cross multiply
    289,985.40x = 435,147.44 × 121,491.32
  4. Step 4: Simplify right side
    289,985.40x = 52,866,634,097.03
  5. Step 5: Solve for x
    x = 52,866,634,097.03/289,985.40
  6. Step 6: Final answer
    x = 182,307.92

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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.